I remember I used to watch your videos and think, "I don't even have a toyota " now my first toyota is a 4runner. Thank you for making these educational videos!
Always take a video and some photos of the engine bay or whatever they are working on before and after taking to a mechanic especially a stealership. That way you can keep them accountable for any mishaps like this. They should be paying the bill on this one.
@@Americafirst-i8qCongratulations on your certification. It’s good that you don’t screw people over at your dealership. I’m not your buddy, that designation is reserved for brothers in battle. Trust no-one, verify everything, cover your bases by keeping record of what you started with and what you received back. I’ve had all kinds of experiences with work done at dealerships by certified mechanics. Certified is worth the paper it’s printed on. Experience and diligence is what matters.
@@Americafirst-i8q I don't know about your dealership but where I'm at, they start new guys off as lube techs. Most can't help but overfill the engine with oil on an oil change, thats the level most of these new Toyota "mechanics" are at. Then, these same poorly trained, rookie "mechanics," are eventually allowed to work on people's cars, with minimum oversight and sometimes none. I have confirmed this with Toyota employees AND mechanics/techs. If I told you the nightmare I recently experienced with two dealers, you might be shocked but maybe not. I believe you're a good mechanic by your response and I don't believe that comment was meant for the good mechanics out there. But as a Toyota certified mechanic, I wonder if you can actually say the bad ones are the exception and not the rule.
We had an older Ford ranger with the typically Rock solid Lima 2.3 engine. One day my son was driving it in freezing rain, it slid on the ice and gently turned sideways into a ditch. The ground was so soft there was only minor damage to the fender. Fortunately, he shut the engine off right away. We took it to a shop that had a good reputation but that we had not used. A technician there told us unfortunately the engine had hydrolocked. However, he said he would offer us $350 for the truck. That triggered my suspicions. We took the truck to a body shop recommended to us and the mechanic there said the story was BS. He cleaned it up, put some marvel miracle oil in it and fired it up. It shot a little coolant out the exhaust and ran fine after that. We put another 60,000 mi on it and sold it you're a very happy young man. The moral is if a technician pronounces your vehicle dead but then makes a lowball offer for it get it somewhere else as fast as you can.
It’s always a red flag when a mechanic inspects your car then offers to buy it. If they want to buy your car they should offer before looking at it and ask you how much you want for it before the inspection not after
I bought a 1996 Tacoma, bad head gasket, $1,500. It was locked, they replaced both the radiator and starter and still couldn't fix it. 😂 edit, ran fine after I drained the cooling system and let it sit. No damage.
It's a question of fluid density. Trust me, if it were water, that engine would be gone. Also, gasoline is volatile, hence in the cylinder under pressure + the heat going on during compression + the spark plug overhead igniting the mixture, it burns/evaporates, turning partially a decent amount of the extra gasoline into gas which is compressible, lowering resistance to the piston travel upward saving the engine down the road unlike water.
Just changed my spark plugs, although I knew 100% I re-attached that hose, I still went out and double checked. One thing I think is very important as a DIY'er, is to make yourself a checklist of every step you must complete, and triple check it as you go. It doesn't matter how familiar you may feel about a task, working out in the cold or heat will make you forget stuff. By running a checklist, you reduce the chance of this happening. He perfectly explained why I will never step foot in a Toyota service center again, unless its to pick up my purchased parts.
@@MrNorthstar50 Yeah, investing in the service manual pays for itself with just a few jobs. However, I think its best to couple that with screenshots from UA-cam videos. If I can't get enough information on a job to make myself confident in doing it, that's when I draw the line and take to my mechanic.
@@SomeOne_86Their selection is limited, for the price they're pretty good. They are broken down in terms of brakes, suspension, etc. They provide torque specs for most significant parts. However some info is vague and glossed over, lacking the proper detail needed to complete a job unless you have previous experience.
Rookie mistake that should never occur. My father, a gasoline/diesel technician for over three decades, always taught me to return and check and recheck the work performed. This was a very happy ending for this vehicle owner. Thank you AMD….
@@reubenmorris487 that’s up to the shop owner. Sometimes that falls on the shoulders of the service writer. Technicians are often too busy getting cars out of their bay. No car for the customer means no money for the shop.
mechanics are paid very little and theyre tired so its not a good combo. check their work. check your wheels if theyre tight. check your brakes lol if you know how. should do as much work yourself that you can.
@@dinobot_maximize I don’t know where you live, but most seasoned/experienced technicians get paid well. I know several that left dealerships and either joined independently owned shops or opened their own. It is tiring, but that just an excuse for a potential lawsuit and loosing future customers. I helped managed an independent import shop. The owner and I were both retired and prior military. We couldn’t make excuses as soldiers and Marines for incompetence. We didn’t make excuses for bad work. There’s absolutely no excuse for this misstep for this technician. We don’t get paid for excuses.
That’s why you either find a good mechanic you trust or learn to work on your car! Ever since I started working on my car I’ve had zero issues but I still wish I lived close to Car Care Nut he is a legend!
I always learn a little something. In this case, I'm actually slightly disappointed with toyota. Modulating fuel pressue by vacuum is fine but... no overpressure relief valve as a safety for fuel rails? I'd like to see that fixed.
Last year I bought my 2023 Toyota 4Runner brand new. My first new car since 1989. Yup. And my first ever Toyota. I’m hoping it’s my last car and I love it.
@@craigbosko2229 ok. I stand corrected-ish. I thought it was first used for a landcruiser, but it looks like the 1GR-FE was first used in 2002-2009 for both 4Runner/HiluxSurf And than in the Landcruiser Prado 2002-2009. So, it’s both, however, if it was R&D to be worthy for a landcruiser, then it is as bulletproof as it can get, which really makes me love 4Runners even more. I love my 2GR-FE in my 16 Highlander as well. Toyota is an iForce to be reckoned with
Toyota has a passenger car engine that’s the only one in production that is FAA Certified for aircraft, the 4.0 liter V8 out of the old Lexus ES400. The 3.4 liter 5vzfe is quite an engine that was the predecessor of the 4.0 V6. It had DOHC, port injection, and Toyota made a supercharger kit that really took advantage of the hemispherical four valve combustion chambers. Toyota has made many bulletproof engines, including the 4.7 V8 and the 5.7 V8’s that were standard for the Tundras.
The legend of the 5th Gen 4Runner continues to grow! Even when a tech goofed and didn't connect a hose back, the engine found a way survive that cylinder wash down! Long live the 5th Gen 4Runner!
Agreed! As the owner of a 2004 4Runner with 242,000 miles, this generation 4Runner is amazing. I am absolutely gutted that Toyota is removing this engine and replacing it with another one of their over complicated Toyota Turbo-joke engines for the 2025 Toyota 4Runner. Toyota should be ashamed of themselves.
Been working for Toyota for over 10 years now, first time I’ve seen/heard of this happening to these 4Runners. This is definitely some very useful info. Thank you for posting this!
I dont think that hose cause the fuel too rich that filled up the cylinder. Only one cyl. Fuel/fluid/fuel injector cleaner..... got into that cyl by mistake by someone.
Toyota tech here, Love what you do, And the respect you bring with it, Made me want to record what I do, Since your talking 4Runner I just made a complete video of engine trans everything in pieces, In a ways I never seen others do, going to post completed video tonight, check it out, Never work a day in your life, If you Love what you do, All I do is Toyota engines, Just started posting,
@@ericgalvan3589 Toyota is saying every 5k but I have been changing it at every 3k and letting the dealer change it again at the scheduled warranty maintenance time for extra measure bc I know engines
@@ajchiappetta8795Nice! A bit overkill but ain't nothin wrong with that 😊 I change mine every 5k but I never use shop oil, only Pennzoil Ultra Platinum. And only Shell Vpower gas.
@@ajchiappetta8795…I have owned a 4Runner for 17 years, 5000 mile oil changes are perfectly fine for the 4Runner. More importantly exercise your 4Lo occasionally or it will stop working.
As AMD very gently implied (and as some commenters have also mentioned), the owner was inadvertently making life very hard for that V6. I'd guess the owner is now crystal clear or what to NOT do in the future.
I did this with a the first car I bought, a 97 Civic. I did exactly what you said, I would started it to move it out the way of my roommate to get out of the driveway then later start it to put it back. Luckily on the third startup it triggered the check engine light. I don't remember exactly what the code was but I think it was a rich code. The service advisor said exactly what you said, never start it and shut it off because it will dump too much fuel in the engine. He said just driving around the block and back would be good enough to burn off the excess fuel.
I have a Mazda CX 50 that I’ve had over a year and a half. Every time I start up on cold start it revs high, but I make sure to wait to back out of my garage when the RPMs go down and the revs go down.
A few months ago there were many videos on UA-cam showing cars with Hydrolocked engines due to trying to drive through floodwater and not slowing down enough. A lot of very expensive cars would never run again due to engine and electrical damage. It takes many nuts to hold a car togeather, but only one nut behind the wheel to undo them. We are lucky to have the car nut, the owners of these cars were not so lucky.
If it is very cold (below freezing or even Arctic cold) and the engine doesn't run long enough there will actually be condensation water left inside the combustion chambers. Possibly rusting the cylinder walls and/or piston rings on the traditional iron block engines or sleeve bore engines.
I don’t even own any Toyota vehicle but I love to watch your videos and listen to your knowledge of Toyota products thanks for your hard work and dedication
Tsk. Now I know why my JDM car blew a bit of white smoke when I got it. They must have been shuffling it around in the car park in Japan, then at the docks > loading > unloading > and then on and off the trailer to my home. And then I put it up on/off ground ramps. I changed the oil but initially thought it was a head gasket issue or the cold. Everything fine now, but videos like this are gems as I've never heard of this and I've been watching car videos for over 10 years. Many thanks again to AMD and congratualtions on the LS430.
I feel so lucky to live in the Chicago area and having TCCN Automotive in my back yard. Any scheduled maintenance I have now gets performed here. Thanks AMD!
Every time (almost) AMD works on a car that another mechanic has worked on, he discovers problems such as missing clamps, wrong parts, loose or mis-routed hoses / wires etc. Sometimes they aren't critical but just bad practice or a mechanic unfamiliar with the car etc., but sometimes it is. Even though I DIY on my cars, I would not leave hoses loose, screws/bolts out etc. I did learn something new here and a very critical item, that too. You are a true gift to Toyota owners and to car owners in general.
100% true. An old timer told me this a long time ago. He said short trips will kill your engine. You can smell your dip stick and if you smell gas , you are killing the engine. Really good information as always. Im still enjoying my 2003 gmc envoy because of knowledge like this.
I heard that it was only on one cylinder and immediately thought faulty injector. Kudos for the great, non-shotgun approach, and correct troubleshooting.
I keep my mower and yard tools in front of my vehicles in the garage, and my wife always treats me like I’m crazy for putting the Tacoma in neutral, rolling it back, and then rolling it forward when I’m done. I always tell her it’s bad for the engine, but she thinks I’m making it up. Maybe I’ll make her watch this so I can say SEE!
@@jackcummins1049he is talking about short starts and stops (short engine runs) same thing tech is talking about. Lot of fuel in car at start up and then not burning it off . He could just move car to get mower and leave it running a lil bit longer
Did the same thing with my Corolla until a shed was built. Being a light car moving it back and forth a couple feet was easy. Plus it is a manual so never needed the keys so long the doors were unlocked!
Glad I watched this video. Our family’s house had a tandem parking situation, and we, on a daily basis, made “short” drives to let each other out of the driveway. I do remember their older Toyota cars had a gasoline smell and random startup issues during cold mornings. LESSON LEARNED here. 👍🌻
Always like watching your videos. This happen to me last winter in my Nissan Rogue. I moved it a few feet and turned it off. My wife went to go start it some time after and came in to tell me the car won't start. Turned it over, would crank but no ignition. Now that you mention it, it did sound like it had no compression. I thought it was just flooded because of the short start, so I knew to put my gas peddle to the floor. It started and wasn't happy, white smoke filled the air. I let it run and it cleared up. I didn't change the oil because I thought it was just flooded. I do most of my maintenance on my vehicles and do all my maintenance on my dirt bike including rebuilding the engine. Thanks again for the education.
Nice. Good find. As a fellow master mechanic that worked for GM for many years as a bumper to bumper gas, diesel, CNG and hybrid/EV technician, it's amazing how many easy little things can be overlooked. I'm glad I had a great career with no re checks and a great reputation. Always had pride in my work just like I can tell you do. I now work as a mechanic for a railroad in California troubleshooting, repairing and maintaining their diesel locomotives and still do side jobs for old customers of mine as well as my family members cars and mine, and still have the same pride in my work that I had since I was a kid. Nothing worse for a mechanic than a bad reputation over little mistakes here and there that can cause major issues. Double and triple check your work. I understand flat rate and the possible pressure to finish it quick, but when it comes to the crucial parts, prep before, slow down, execute and make sure you re check everything after.
As a Hylander Toyota owner, I regularly watch your videos. Thank you for sharing your knowledge with all of us. ❤thank you and keep at it. The v6 engine is really an awesome engine. Our is 3.5 Litre V6. Smooth power and very robust internals folks. 🙏🏻🙏🏻we bought it in 2009 and have put on 240,000 happy miles on it. It runs perfect.
Thanks a lot for another informative and interesting video , bought my beloved 4runner 3 years ago based on the review you did of the 5th gen and it's been the best purchase ever made , may the Good Lord keep blessing you for your good deeds.
you made me dream with your videos on the Toyota Tundra 5.7 v8. I am French, my salary is low. I could never afford one. But your videos fascinate me. Greetings from France.
Most of us very knowledgeable about trucking. and the engine Washdown the cylinder liners from diesel idling. Once it starts it only gets worse until rebuild. That's why we say idle up the engine over night.
🙏 for the explanation. Experienced exactly this with my Silverado driving 2.4km to work and back in -20 deg Celcius weather. Never had this again after allowing it to warm completely up after arriving at my destination. Was told i had to do this to allow water to evaporate. This makes much more sense.
Thank you for defining "short trips"! I drive 11 miles oneway to work (5 days a week) and I was wondering if that was a short trip! I drive 7,700 a year.
He does define it. He says starting car, moving it on the driveway and turning off. Typical of shuffling cars on a driveway to make room for cars to exit/enter.
No, you see when rpm goes down to close to normal idle sometimes after you start the car first thing in the morning, that basically means it is out of enrichment phase, take about 5-10 minutes max in modern engine
There is nothing better than hearing advice from you for something I already do. Man does that make me feel good lol. Thanks as always Mr. Car Care Nut.
You're videos are a gift to the Toyota community, I'd love to take my 3rd Gen Tacoma to you to have it looked over after I bought it used a few months ago, currently at 56k on the odo, it's been rock solid so far.
I can watch u all day.. u help me so much with my wife 19 Highlander. After watching your video about changing fluids I’m going to change the rear diff. I have 35,000 miles on a 2019. The dealer recommended it in February of this year and I told him forget it after your video I believe you. More than dealer.. Keep up the Awesome videos my friend
Many many years ago I had a '53 Ford with the last 8BA flathead engine. Unbeknown to me it had a head gasket gone, and one cylinder had filled with water. When I fired it up, 7 cylinders started up and the water filled one blew a hole in the top of the piston. Back in those days it was a weekend DIY fix, but not so on a modern vehicle!! I learn so much from your videos, thank you for all your work in producing them. And yes, I do run a Toyota V6 today.
I thought those things were pretty much bullet proof but I think the head bolts (there were lots of them) were supposed to have been retorqued a few times over the engine life,certainly at least one time after the engine was "broken In" also if it ever got overheated the bolts might have lost some tension someone might have run plain water in it during the summers instead of corrosion inhibitor or "permanent antifreeze"
Most vehicles will start with rich fuel mix and the tachometer will be at @1200rpm idle. When the engine warms and fuel mix leans out tachometer will drop to @800rpm and safe to shutdown engine.
My Volvo high idles on cold start at 1500 before rpm’s settle. I’ve moved my car out of the driveway and shut it off quickly usually but not after it’s settled after high idle. This is pretty frequent because my family has lots of vehicles so I do it on the daily. Haven’t had issues doing this since 2021. Had 100k then, car now has 164k
@@dannyrbaileyIncreased engine wear is another downside of frequent cold starts. It doesn't cause a "failure" of any kind, it causes very very gradual deterioration of power, fuel economy, noise, vibration, etc. A lot of people don't even notice or realize that it's happening because it's so gradual.
Extremely great review! I lived in Edmonton, AB this winter and at one point for 2 weeks the temperature outside was -46F and even more with the wind. I was plugging in the block heater (5.7LV8 2017 Sequoia) and would not start driving until I see the oil temperature needle move up letting engine to properly run in the rich mode warming up properly before I'd drive. I don't care if I'd be late, but proper warm up for a V8 in such weather extreme temperatures, in my opinion, is a must.
Great advice, back when they had carburetor's on cars my wife would start her car with no warm up and take one kid to school about 3/4 mile from home. Then wait one hour and take my son to different school 1 1/2 mile away. I was checking her oil and it had white foam all over the dipstick and I checked the crankcase breather hose and it to had foam. It was because those short trips without a warm up was causing condensation in the crankcase.
Cylinder washdown was a threat with my Toyota Previas in Minnesota. The cold start in our cold weather made for a very rich mix for a long duration since getting to closed loop took a while. Timely oil changes were critical as well.
I drive a 2013 CRV with only 8,000 miles. It’s my “Sunday car” since my everyday car is a 2012 Fit with 130,000 mi. Both are excellent vehicles. I was thinking to replace my Fit with an HRV, except that all Hondas now appear to have CVT trannies. Not interested. I would consider a Toyota RAV4 LE with naturally aspirated, non turbocharged, non CVT. No CVTs for me, no matter who makes it.
I always like to let my car warm up for at least 5 minutes usually until the temp light goes out. And I like to change my oil every 3000-4000 miles / 3-4 months. My 08 Yaris Sport has 200K miles and revs like new. Replaced a water pump and AC condenser, brakes and tires.... feels like it has 800k left in it...
Also allow it to run longer to evaporate the fuel in the oil! In WW 2 Aircraft engines used gas to dilute the oil to help start in cold weather. then it had to run at normal temps for at least one hour to get the gas out of the oil! Also round engines used to get hydro lock in the lower cylinders from oil! Thanks for the great videos!
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I agree with everything you’ve said except for one thing. You can wash one down, loose compression, contaminate the oil. The only way to fill the cylinder with fuel like that is a leaking injector. When the cylinders wash down to the point compression drops so low combustion isn’t possible, it still spins over allowing raw fuel to exit via exhaust valves or quite frankly, in the case of a wash down, go into crankcase as you said earlier. I would hesitate to deliver this car back without performing injector leak down on both port and direct injectors. Assuming that is a 3.4, it has twelve injectors. Six port, six direct. You can’t hydrolock one unless injector is leaking down while engine isn’t running. Not busting on you Sir, I’m just a tech myself who has experienced many wash downs as well as hydro locked engines. Vehicle should only be fueling if engine is turning over. Side note: Toyotas don’t have clear flood. Someone’s gonna hit the chip during a cold start on a Yota. Mostly every other brand does though. Enjoy your vids, wanted to clarify that. I replaced a 5.3 Yukon engine awhile back. Bent rod on cylinder six. No sign of fuel in cylinders once vehicle arrived. Noted the oil smelled fueled but cylinders were dry. Purchase a long block. Moved all accessories from original to new long block as one does. I asked a helper to turn the switch on to roll down a window so my scan tool cord would reach me at the front of the vehicle. It was a while ago now that I’ve said that😂 I’ve had wireless scan tools forever. Anyway, I was close to being ready to start vehicle for the first time but had the throttle body off cleaning it. When he hit the switch and the fuel pump kicked on I heard an injector spray…pulled the plugs. The hole with previously bent rod had started to fill with fuel. Almost did the same to new engine. I have the bent rod and piston on my desk. Made a lamp out of the camshaft of that engine so no matter if I’m home or working, I’m constantly reminded to slow down and check everything. Please don’t take this comment as anything but being helpful and if I’m wrong, please let me know! No offense will be taken. God bless.
You're making a valid point here. I was wondering too how a modern fuel injected engine could flood a cylinder with fuel. Shouldn't be possible even with fuel pressure at max. Something else must have happened, apart from the unconnected hose.
This motor is a 4.0 port injection only. You're referring to the motor they put in tacomas.
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@@r1pthajacker128 it doesn’t matter whether it has port, direct, or both. It shouldn’t fuel when engine is off regardless of injection type. He had an injector leaking down. Love dudes content though.
I wish you had made this video a few months ago! This happened on my 2000 nissan xterra v6 and I experienced every symptom you described: low compression cranking sounds, tons of gas smelling smoke from the exhaust, and even a hydrolocked engine refusing to start. After letting it sit for a day and bleeding the fuel pressure to do a leakdown test it started and ran rough until it cleared up. Until today I was at a complete loss as to what happened because I couldn't believe so much gas leaking in could cause this.
To add to this, I had parked it in my garage to repair the rear drum brakes. My car is a manual transmission, so in the process of positioning the vehicle in the garage to work on it I had started and stopped several times from cold because I had to leave the car in gear every time I got out to check.
This condition has a name: "Lawn mower syndrome". Sometimes person would start the car and move it few feet away from the garage door, shut it off, get the lawn mower out, go back to the car which now cranks but does not start. There is no compression. Oil was washed down from pistons and cylinders during the initial start when extra fuel is always pumped in. Result was a tow to the dealer and a huge repair bill which strangely did not include any car parts. They will use some funny language to explain what they did to get the car running again. Basically, they took the sparkplugs out and put a spoonful of motor oil into each cylinder. They waited 5 minutes and then the car started, roughly at first and then quickly back to normal as the oil got pushed back around the pistons and cylinders. I told every member of my family and all my friends this: "EVERY time you start your engine, no matter the reason, always let it run at least 2 minutes before shutting it off".
Wow AMD, great advice. I’m very guilty of the start stop especially when I wash my cars. I start them back out, wash, restart and drive back into my garage. No more. I will take them for a short run before and after the wash. Thanks for the heads up.
The fact that only one cylinder filled with fuel tells me it's not a wash down condition but a problem with that injector dumping fuel or maybe even having a leak where it leaks over time while engine is off.
yes, that was my first thought. i have a hard time imagining a normal functioning injector filling up a moving cylinder even in open loop with max fuel rail pressure... yes it will cause oil dilution cylinder wall wear and all that stuff but filling up a cylinder with fuel? that thing was filled up while it was not running and thankfully starter was not strong enough and did not get a partial spin to bend a rod
That was exactly my thought process. I was almost sure we either have a leaky injector or an injector driver that’s stuck on. But neither of these cases were true. The injector doesn’t leak after multiple pressure tests.
I had replaced the valve cover gasket and the fuel rail on my Saturn Ion Redline. I put everything back together, went to start it up and it quit cranking after a few spins! I immediately quit, I started pulling spark plugs and cylinder 2 was full of fuel! I couldn’t figure out why, finally after much visual inspection I saw that I had pinched one of the wires to that injector and cut it! As soon as I turned the key it was shooting fuel into the cylinder. I cranked the car over with the plugs out and pedal down to clear the cylinder, repaired the broken wire, and all was good after that! I learned my lesson to really pay attention when reinstalling things. I also made sure to change the oil as well. Good luck out there!
I absolutely love and appreciate your videos so much. I’ve learned more about my 4Runner and vehicles in general in the past few years watching your channel, than I have my entire life. Glad to keep my 4Runner, boat and anything gas powered running in peak operational condition.
I used to take my vehicles to the dealership until 1 day when they did tire rotation but failed to switch the TPMS position on the cluster. From that point onward, I started working/maintaining my vehicles. If they skipped/forgot such simple thing...what else are they gonna forget/miss/skip when it comes to other major items.
This is the problem with newer/larger shops and dealership shops. There's no personal relationship between the customer and the person who wrenches on your car. I've been known to follow "my guy" across 3 to 4 different shops over a couple of decades. In the rare event something goes wrong - my guys stand good for it.
Having a 2015 5th Gen 4Runner this was very helpful. I always let the car run 'when driveway jockeying'. I often will run them around the block when I have the time. Thanks so much for this.
There is one other situation that can cause the cylinder wash down in my experience. In the winter a few years ago in MN, I started up my 2003 Lexus ES300 in the driveway that I had purchased a few months ago used (about 7 years old, in great shape with zero issues and had a pre-purchase inspection). It was running so rough, shaking and spewing a ton of white smoke from the exhaust. It looked like a fog machine. I had never seen this before- what was happening? I knew basically that blue smoke=burning oil and white=coolant, but there was no issue with the coolant so I was at a loss. My mechanic found that the mass airflow (MAF) sensor was very dirty. Being an engineer, I then knew what happened. Due to the bad sensor the ECM thought there was barely any air in the engine for combustion and the ECM compensated by dumping in a ton of fuel plus being a cold engine with richer winter gas made for a bad combination. That's never happened since, but every few years I clean out the MAF sensor with electronics contact cleaner just to be on the safe side. That was scary. Now I know what that term specifically is. Thanks for the lesson!
Thank you for your advice…I love Toyotas, I have 3 and a older Lexus for the family…all used vehicles and have treated us well…love your channel, wish you were in my area, New England, but. The awesome videos coming sir…
Never have liked to short trip any of my vehicles, I like to take it for a good long run every now and then, called a Italian tune up, your car well thank you for it, and it makes it run better
Rats chewed the ignition wires of my new 2023 4Runner. The dealer replaced the damaged wires. Just watched this and checked for the hose and found it unconnected and lying below. I pray no damage occurred. Pissed as hell.
Have no idea why youtube suggest this video, but moms car has that same exact issue, its fixed now. Funny cause a lot of mechanics now days dont even know this. THANK YOU, BLESSINGS from the Caribbean
Thank you for this video, not only for the great outcome for the vehicle, but for the great explanation of HOW and WHY this happened! We've heard the saying "Short trips can damage an engine." This video gives the step by step explanation of how it happens.
Its already been said but let me add another sincere thank you for all you do in producing these videos for all of us dyi guys. You have been a god send in helping explain and show procedure and protocol in these repairs. I have a 2007 Lexus RX350 with 2GR-FE and your instruction has been invaluable in numerous repairs. I cant emphasis the appreciation for the professionalism and quality of your videos. I do all the dyi I can but i told my wife if we ever need internal work (Heads, bottom end, or rebuild or replacement) she should pack a bag because we vacationing in Chicago and dropping it off! Thank You Amd, taje care and thank you.
I remember you mention that small hose/vacuum line from an earlier video with the same 4.0 liter V6 engine but this one really showed just how important it is to ensure it's attached (easy to over-look as it is hidden).
I remember reading an article published by the American Petroleum Institute back in the carburetor era stating that too many short trips in cold weather are engine destroyers. Oil typically needs to reach 180F before it lubricates effectively and it can take upwards of half an hour in cold weather to reach that temperature. Maybe modern oil works better, but I still change the oil more frequently in cold weather for this reason.
How was this not a stuck/leaking injector if only one cylinder had fuel in it? Also, how did it get completely full? I understand that a malfunctioning fuel pressure regulator will cause it to run rich but a rich condition will never cause any visible amount of fuel to pool, especially in a single cylinder?
I'm scratching my head as well. One cylinder has a pint of fuel in it and he says the injector was good when he tested it? Intermittent bad injector? Not getting the whole story here.
2024 last year of the 4.0 😮buy it before it’s gone you won’t regret it. I have a 2007 bought it new. One of the best decisions I ever made. Still own it. Love it.
I remember I used to watch your videos and think, "I don't even have a toyota " now my first toyota is a 4runner. Thank you for making these educational videos!
☺️Me too🫡
Welcome to the family
I never have a 4RUNNER until I started watching his videos... I learned so much from him that I went to buy one...😂😊😅
Me too!! 😊
Me too 😂
Good thing they brought it to you, the Toyota dealer probably would have said you need a new engine, engine is toast.
Wouldn’t surprise me if someone messed with that small vacumm hose ! I’ve witnessed worse…
Always take a video and some photos of the engine bay or whatever they are working on before and after taking to a mechanic especially a stealership. That way you can keep them accountable for any mishaps like this.
They should be paying the bill on this one.
@@WaltWWreally? I work as a certified tech I don't screw people at the dealer buddy.
@@Americafirst-i8qCongratulations on your certification. It’s good that you don’t screw people over at your dealership. I’m not your buddy, that designation is reserved for brothers in battle. Trust no-one, verify everything, cover your bases by keeping record of what you started with and what you received back. I’ve had all kinds of experiences with work done at dealerships by certified mechanics. Certified is worth the paper it’s printed on. Experience and diligence is what matters.
@@Americafirst-i8q I don't know about your dealership but where I'm at, they start new guys off as lube techs. Most can't help but overfill the engine with oil on an oil change, thats the level most of these new Toyota "mechanics" are at. Then, these same poorly trained, rookie "mechanics," are eventually allowed to work on people's cars, with minimum oversight and sometimes none. I have confirmed this with Toyota employees AND mechanics/techs. If I told you the nightmare I recently experienced with two dealers, you might be shocked but maybe not.
I believe you're a good mechanic by your response and I don't believe that comment was meant for the good mechanics out there. But as a Toyota certified mechanic, I wonder if you can actually say the bad ones are the exception and not the rule.
We had an older Ford ranger with the typically Rock solid Lima 2.3 engine. One day my son was driving it in freezing rain, it slid on the ice and gently turned sideways into a ditch. The ground was so soft there was only minor damage to the fender. Fortunately, he shut the engine off right away. We took it to a shop that had a good reputation but that we had not used. A technician there told us unfortunately the engine had hydrolocked. However, he said he would offer us $350 for the truck. That triggered my suspicions. We took the truck to a body shop recommended to us and the mechanic there said the story was BS. He cleaned it up, put some marvel miracle oil in it and fired it up. It shot a little coolant out the exhaust and ran fine after that. We put another 60,000 mi on it and sold it you're a very happy young man. The moral is if a technician pronounces your vehicle dead but then makes a lowball offer for it get it somewhere else as fast as you can.
good catch on that red flag. if someone says your car is scrap but instantly adds 'but id buy it from you' is definitely ripping you off.
Sharks always wait for the easy prey.
It’s always a red flag when a mechanic inspects your car then offers to buy it. If they want to buy your car they should offer before looking at it and ask you how much you want for it before the inspection not after
@@TheCarCareNut But, how do they know what to offer before inspection?
@@jamesolajide185 intuition, based on professional experience over a career or lifetime maybe . . . ?
Engine was hydro locked and still didn’t get damaged! Gotta love the Toyota 4.0 V6!
I bought a 1996 Tacoma, bad head gasket, $1,500. It was locked, they replaced both the radiator and starter and still couldn't fix it. 😂 edit, ran fine after I drained the cooling system and let it sit. No damage.
That is quite impressive tolerance
It's a question of fluid density. Trust me, if it were water, that engine would be gone. Also, gasoline is volatile, hence in the cylinder under pressure + the heat going on during compression + the spark plug overhead igniting the mixture, it burns/evaporates, turning partially a decent amount of the extra gasoline into gas which is compressible, lowering resistance to the piston travel upward saving the engine down the road unlike water.
@@BT-zw2ix That much gasoline is incompressible just like water. And the cylinder was completely full to boot.
Was it said it's 4.0L?
You are a natural, born teacher, the way you explain things gets through to pretty much everybody
Explaining something and actually having to fix a problem is a whole different ball game.
Just changed my spark plugs, although I knew 100% I re-attached that hose, I still went out and double checked. One thing I think is very important as a DIY'er, is to make yourself a checklist of every step you must complete, and triple check it as you go. It doesn't matter how familiar you may feel about a task, working out in the cold or heat will make you forget stuff. By running a checklist, you reduce the chance of this happening.
He perfectly explained why I will never step foot in a Toyota service center again, unless its to pick up my purchased parts.
Good advice, and pictures also help.
@@MrNorthstar50 Yeah, investing in the service manual pays for itself with just a few jobs. However, I think its best to couple that with screenshots from UA-cam videos. If I can't get enough information on a job to make myself confident in doing it, that's when I draw the line and take to my mechanic.
Are the Haynes manuals any good?
@@SomeOne_86they used to be very good.
@@SomeOne_86Their selection is limited, for the price they're pretty good. They are broken down in terms of brakes, suspension, etc. They provide torque specs for most significant parts. However some info is vague and glossed over, lacking the proper detail needed to complete a job unless you have previous experience.
Rookie mistake that should never occur. My father, a gasoline/diesel technician for over three decades, always taught me to return and check and recheck the work performed. This was a very happy ending for this vehicle owner. Thank you AMD….
Too bad there's no standard QA inspection in the automotive industry like in aviation.
@@reubenmorris487 that’s up to the shop owner. Sometimes that falls on the shoulders of the service writer. Technicians are often too busy getting cars out of their bay. No car for the customer means no money for the shop.
mechanics are paid very little and theyre tired so its not a good combo. check their work. check your wheels if theyre tight. check your brakes lol if you know how. should do as much work yourself that you can.
@@dinobot_maximize I don’t know where you live, but most seasoned/experienced technicians get paid well. I know several that left dealerships and either joined independently owned shops or opened their own. It is tiring, but that just an excuse for a potential lawsuit and loosing future customers. I helped managed an independent import shop. The owner and I were both retired and prior military. We couldn’t make excuses as soldiers and Marines for incompetence. We didn’t make excuses for bad work. There’s absolutely no excuse for this misstep for this technician. We don’t get paid for excuses.
@jamram9924 this is why you do ALL of your own work. That way you know it is done correctly
That’s why you either find a good mechanic you trust or learn to work on your car! Ever since I started working on my car I’ve had zero issues but I still wish I lived close to Car Care Nut he is a legend!
In reality, you have to be "that mechanic". And you don't have to be a mechanic for that.
I always learn a little something. In this case, I'm actually slightly disappointed with toyota. Modulating fuel pressue by vacuum is fine but... no overpressure relief valve as a safety for fuel rails? I'd like to see that fixed.
Last year I bought my 2023 Toyota 4Runner brand new. My first new car since 1989. Yup. And my first ever Toyota. I’m hoping it’s my last car and I love it.
Congratulations. You should have many happy years of driving ahead of you with that choice.
Lucky you. the new ones are coming in with the 2.4 turbo engines, LOL.
Should last you for a long while as long it is taken care of👍👍
A testament to how tough and well made those 4 litres are. One of the best engines Toyota has ever made imo.
They even used them in some of their landcruisers. So to me, it’s a landcruiser engine in a 4 Runner
@timothyhorine2570 SO which vehicle came out first the LAND Cruiser or the 4 Runners ?
@@craigbosko2229 ok. I stand corrected-ish. I thought it was first used for a landcruiser, but it looks like the 1GR-FE was first used in 2002-2009 for both 4Runner/HiluxSurf
And than in the Landcruiser Prado 2002-2009. So, it’s both, however, if it was R&D to be worthy for a landcruiser, then it is as bulletproof as it can get, which really makes me love 4Runners even more. I love my 2GR-FE in my 16 Highlander as well. Toyota is an iForce to be reckoned with
Toyota has a passenger car engine that’s the only one in production that is FAA Certified for aircraft, the 4.0 liter V8 out of the old Lexus ES400. The 3.4 liter 5vzfe is quite an engine that was the predecessor of the 4.0 V6. It had DOHC, port injection, and Toyota made a supercharger kit that really took advantage of the hemispherical four valve combustion chambers. Toyota has made many bulletproof engines, including the 4.7 V8 and the 5.7 V8’s that were standard for the Tundras.
2nd gen Tacomas have 4.0
I had to run out to my 4R to check that hose 🤦🏻♂️
I bet I’m not the only one haha😁
would have been nice if he showed the hose location.
@@DavidWX877 He did.
ua-cam.com/video/V02O8YGuc4U/v-deo.html right there :)
@@DavidWX877 Is 5:01 what you're looking for?
@@DavidWX877apparently you didn’t watch the video.
The legend of the 5th Gen 4Runner continues to grow! Even when a tech goofed and didn't connect a hose back, the engine found a way survive that cylinder wash down! Long live the 5th Gen 4Runner!
Agreed! As the owner of a 2004 4Runner with 242,000 miles, this generation 4Runner is amazing. I am absolutely gutted that Toyota is removing this engine and replacing it with another one of their over complicated Toyota Turbo-joke engines for the 2025 Toyota 4Runner. Toyota should be ashamed of themselves.
That did serious damage. I hope they got a new engine out of it. Unacceptable mistake. They should pay.
@@BeefNEggs057 he says in the video it was inspected and no damage occurred.
@@BeefNEggs057 You mustn't have watched the entire video. Engine survived with zero cylinder/piston/internals damage.
The 4th Gen has the same motor, so maybe you should have just said "The legend of the 1GR-FE motor continues!"
Been working for Toyota for over 10 years now, first time I’ve seen/heard of this happening to these 4Runners. This is definitely some very useful info. Thank you for posting this!
I dont think that hose cause the fuel too rich that filled up the cylinder. Only one cyl. Fuel/fluid/fuel injector cleaner..... got into that cyl by mistake by someone.
@@tonymai1844 I trust TCCN channel. I wonder if he will address your claim.
What’s the best tips you have for someone who wants the opportunity working in a Toyota service center?
Mike, my 2016 Tacoma V6 4x2 timing cover Crack at the dealership when timing cover leak was done by them why would it Crack?
Toyota tech here, Love what you do, And the respect you bring with it, Made me want to record what I do, Since your talking 4Runner I just made a complete video of engine trans everything in pieces, In a ways I never seen others do, going to post completed video tonight, check it out, Never work a day in your life, If you Love what you do, All I do is Toyota engines, Just started posting,
You have my attention. I would watch your videos. And where might you be located?
@@ObservingtheObvious , That’s such a cool name rite there. Respect , thank you, in the SF Bay Area
@@WaltNastyI think he meant whats the website
@@scottgorman7166 lol just click on that White tool box next to my name. Take you there
@@scottgorman7166
Yes; where to watch the video(s).
Thanks.
Thanks!
As a long time Toyota owner, I have learned a lot from watching your channel.
I own a repair shop specializing in bmw, Rolls and other exotics and I drive a 2024 4Runner, I bought a TRD ORP and have fallen in love with with.
What is your oil change interval?
@@ericgalvan3589 Toyota is saying every 5k but I have been changing it at every 3k and letting the dealer change it again at the scheduled warranty maintenance time for extra measure bc I know engines
@@ajchiappetta8795Nice! A bit overkill but ain't nothin wrong with that 😊 I change mine every 5k but I never use shop oil, only Pennzoil Ultra Platinum. And only Shell Vpower gas.
@@ajchiappetta8795…I have owned a 4Runner for 17 years, 5000 mile oil changes are perfectly fine for the 4Runner. More importantly exercise your 4Lo occasionally or it will stop working.
Not too many things would put a 4Runner engine at risk, so it's definitely worth paying attention. Great video.
As AMD very gently implied (and as some commenters have also mentioned), the owner was inadvertently making life very hard for that V6. I'd guess the owner is now crystal clear or what to NOT do in the future.
Honest and SKILLED mechanics and repair shops are a Godsend..most rural areas do not have a place like this.
I did this with a the first car I bought, a 97 Civic. I did exactly what you said, I would started it to move it out the way of my roommate to get out of the driveway then later start it to put it back. Luckily on the third startup it triggered the check engine light. I don't remember exactly what the code was but I think it was a rich code. The service advisor said exactly what you said, never start it and shut it off because it will dump too much fuel in the engine. He said just driving around the block and back would be good enough to burn off the excess fuel.
I have a Mazda CX 50 that I’ve had over a year and a half. Every time I start up on cold start it revs high, but I make sure to wait to back out of my garage when the RPMs go down and the revs go down.
@@eleanormassaro5195same with my ‘19 Toyota Camry. I always wait til it idles under 1k rpms.
how many times did u do that before the problem started?
A few months ago there were many videos on UA-cam showing cars with Hydrolocked
engines due to trying to drive through floodwater and not slowing down enough.
A lot of very expensive cars would never run again due to engine and electrical damage.
It takes many nuts to hold a car togeather, but only one nut behind the wheel to undo them.
We are lucky to have the car nut, the owners of these cars were not so lucky.
Love that old school Toyota starter sound, and engine with fan !!!
I had forgotten the specific reason for the inadvisability of starting a cold engine very briefly and then shutting it off. This was a nice refresher.
If it is very cold (below freezing or even Arctic cold) and the engine doesn't run long enough there will actually be condensation water left inside the combustion chambers. Possibly rusting the cylinder walls and/or piston rings on the traditional iron block engines or sleeve bore engines.
Your channel is going to help people for years to come.
I don’t even own any Toyota vehicle but I love to watch your videos and listen to your knowledge of Toyota products thanks for your hard work and dedication
This man is legit. Knows his craft!
Tsk. Now I know why my JDM car blew a bit of white smoke when I got it. They must have been shuffling it around in the car park in Japan, then at the docks > loading > unloading > and then on and off the trailer to my home. And then I put it up on/off ground ramps. I changed the oil but initially thought it was a head gasket issue or the cold.
Everything fine now, but videos like this are gems as I've never heard of this and I've been watching car videos for over 10 years. Many thanks again to AMD and congratualtions on the LS430.
I feel so lucky to live in the Chicago area and having TCCN Automotive in my back yard. Any scheduled maintenance I have now gets performed here. Thanks AMD!
Every time (almost) AMD works on a car that another mechanic has worked on, he discovers problems such as missing clamps, wrong parts, loose or mis-routed hoses / wires etc. Sometimes they aren't critical but just bad practice or a mechanic unfamiliar with the car etc., but sometimes it is. Even though I DIY on my cars, I would not leave hoses loose, screws/bolts out etc. I did learn something new here and a very critical item, that too. You are a true gift to Toyota owners and to car owners in general.
100% true. An old timer told me this a long time ago. He said short trips will kill your engine. You can smell your dip stick and if you smell gas , you are killing the engine. Really good information as always. Im still enjoying my 2003 gmc envoy because of knowledge like this.
I heard that it was only on one cylinder and immediately thought faulty injector. Kudos for the great, non-shotgun approach, and correct troubleshooting.
I keep my mower and yard tools in front of my vehicles in the garage, and my wife always treats me like I’m crazy for putting the Tacoma in neutral, rolling it back, and then rolling it forward when I’m done. I always tell her it’s bad for the engine, but she thinks I’m making it up. Maybe I’ll make her watch this so I can say SEE!
What??
@@jackcummins1049he is talking about short starts and stops (short engine runs) same thing tech is talking about. Lot of fuel in car at start up and then not burning it off . He could just move car to get mower and leave it running a lil bit longer
Did the same thing with my Corolla until a shed was built. Being a light car moving it back and forth a couple feet was easy. Plus it is a manual so never needed the keys so long the doors were unlocked!
@@thehickspanic8646 Right.
You are crazy
Glad I watched this video. Our family’s house had a tandem parking situation, and we, on a daily basis, made “short” drives to let each other out of the driveway. I do remember their older Toyota cars had a gasoline smell and random startup issues during cold mornings. LESSON LEARNED here. 👍🌻
Always like watching your videos. This happen to me last winter in my Nissan Rogue. I moved it a few feet and turned it off. My wife went to go start it some time after and came in to tell me the car won't start. Turned it over, would crank but no ignition. Now that you mention it, it did sound like it had no compression. I thought it was just flooded because of the short start, so I knew to put my gas peddle to the floor. It started and wasn't happy, white smoke filled the air. I let it run and it cleared up. I didn't change the oil because I thought it was just flooded. I do most of my maintenance on my vehicles and do all my maintenance on my dirt bike including rebuilding the engine. Thanks again for the education.
Nice. Good find. As a fellow master mechanic that worked for GM for many years as a bumper to bumper gas, diesel, CNG and hybrid/EV technician, it's amazing how many easy little things can be overlooked. I'm glad I had a great career with no re checks and a great reputation. Always had pride in my work just like I can tell you do. I now work as a mechanic for a railroad in California troubleshooting, repairing and maintaining their diesel locomotives and still do side jobs for old customers of mine as well as my family members cars and mine, and still have the same pride in my work that I had since I was a kid. Nothing worse for a mechanic than a bad reputation over little mistakes here and there that can cause major issues. Double and triple check your work. I understand flat rate and the possible pressure to finish it quick, but when it comes to the crucial parts, prep before, slow down, execute and make sure you re check everything after.
As a Hylander Toyota owner, I regularly watch your videos. Thank you for sharing your knowledge with all of us. ❤thank you and keep at it. The v6 engine is really an awesome engine. Our is 3.5 Litre V6. Smooth power and very robust internals folks. 🙏🏻🙏🏻we bought it in 2009 and have put on 240,000 happy miles on it. It runs perfect.
😎👍
Professional channel, not like 99% of those existing on UA-cam.
Thanks a lot for another informative and interesting video , bought my beloved 4runner 3 years ago based on the review you did of the 5th gen and it's been the best purchase ever made , may the Good Lord keep blessing you for your good deeds.
Dude, you rock! I don’t have a Toyota, I don’t even have a gasoline engine and I’m from Europe. But you videos are AWSOME! 💪
Diesel? You made me realize that if I ever go EV, I probably will stop watching TCCN 😢
wholesaler, i buy 400-500 vehicles per year . Thanks for all the great info ,learn something on every video
you made me dream with your videos on the Toyota Tundra 5.7 v8. I am French, my salary is low. I could never afford one. But your videos fascinate me. Greetings from France.
Most of us very knowledgeable about trucking. and the engine Washdown the cylinder liners from diesel idling. Once it starts it only gets worse until rebuild. That's why we say idle up the engine over night.
🙏 for the explanation. Experienced exactly this with my Silverado driving 2.4km to work and back in -20 deg Celcius weather. Never had this again after allowing it to warm completely up after arriving at my destination. Was told i had to do this to allow water to evaporate. This makes much more sense.
Thank you for defining "short trips"! I drive 11 miles oneway to work (5 days a week) and I was wondering if that was a short trip! I drive 7,700 a year.
He does define it. He says starting car, moving it on the driveway and turning off. Typical of shuffling cars on a driveway to make room for cars to exit/enter.
No, you see when rpm goes down to close to normal idle sometimes after you start the car first thing in the morning, that basically means it is out of enrichment phase, take about 5-10 minutes max in modern engine
11 miles is a very decent size trip actually. Nothing to worry about there.
@@jfletcher1029
Hence the 'thank you'
@@atticstattic Ah, yes. Misread it. Thanks
There is nothing better than hearing advice from you for something I already do. Man does that make me feel good lol. Thanks as always Mr. Car Care Nut.
The knowledge you drop with every video you give us is priceless!…………………………….
You're videos are a gift to the Toyota community, I'd love to take my 3rd Gen Tacoma to you to have it looked over after I bought it used a few months ago, currently at 56k on the odo, it's been rock solid so far.
I can watch u all day.. u help me so much with my wife 19 Highlander. After watching your video about changing fluids I’m going to change the rear diff. I have 35,000 miles on a 2019. The dealer recommended it in February of this year and I told him forget it after your video I believe you. More than dealer.. Keep up the Awesome videos my friend
Many many years ago I had a '53 Ford with the last 8BA flathead engine. Unbeknown to me it had a head gasket gone, and one cylinder had filled with water. When I fired it up, 7 cylinders started up and the water filled one blew a hole in the top of the piston. Back in those days it was a weekend DIY fix, but not so on a modern vehicle!! I learn so much from your videos, thank you for all your work in producing them. And yes, I do run a Toyota V6 today.
I thought those things were pretty much bullet proof but I think the head bolts (there were lots of them) were supposed to have been retorqued a few times over the engine life,certainly at least one time after the engine was "broken In"
also if it ever got overheated the bolts might have lost some tension
someone might have run plain water in it during the summers instead of corrosion inhibitor or "permanent antifreeze"
As always great video Ahmed. My son and I returned to NC with our LS430 and it rode wonderfully..Thank you brother, so appreciate you and your team.
Most vehicles will start with rich fuel mix and the tachometer will be at @1200rpm idle.
When the engine warms and fuel mix leans out tachometer will drop to @800rpm and safe to shutdown engine.
My Volvo high idles on cold start at 1500 before rpm’s settle. I’ve moved my car out of the driveway and shut it off quickly usually but not after it’s settled after high idle. This is pretty frequent because my family has lots of vehicles so I do it on the daily. Haven’t had issues doing this since 2021. Had 100k then, car now has 164k
@@dannyrbaileyIncreased engine wear is another downside of frequent cold starts. It doesn't cause a "failure" of any kind, it causes very very gradual deterioration of power, fuel economy, noise, vibration, etc. A lot of people don't even notice or realize that it's happening because it's so gradual.
I dont even have a car, but i like how this gentleman explain things without begging for subscribers
AMD, If I ever got a 4Runner of my own, I would treat it with great care and attention. 😉
I'm a 2022 4Runner owner so I loved this. Going to add these tips to my tactical toolbox. Thanks CCN!
Extremely great review! I lived in Edmonton, AB this winter and at one point for 2 weeks the temperature outside was -46F and even more with the wind. I was plugging in the block heater (5.7LV8 2017 Sequoia) and would not start driving until I see the oil temperature needle move up letting engine to properly run in the rich mode warming up properly before I'd drive. I don't care if I'd be late, but proper warm up for a V8 in such weather extreme temperatures, in my opinion, is a must.
See my problem is that I part in a garage and even with the bays open I don't like the idea of idling long inside the garage.
Great advice, back when they had carburetor's on cars my wife would start her car with no warm up and take one kid to school about 3/4 mile from home. Then wait one hour and take my son to different school 1 1/2 mile away. I was checking her oil and it had white foam all over the dipstick and I checked the crankcase breather hose and it to had foam. It was because those short trips without a warm up was causing condensation in the crankcase.
Always love 4Runner content 👍
I continue to strive to be the type of mechanical professional you are. You have such a great understanding of ICE vehicles.
Cylinder washdown was a threat with my Toyota Previas in Minnesota. The cold start in our cold weather made for a very rich mix for a long duration since getting to closed loop took a while. Timely oil changes were critical as well.
Best explaining mechanic on you tube PERIOD ,thanks to you i learn so much about engines, thank you, don't ever stop😊
Period*
greetings from the netherlands love your in depth video's
my favorite channel. and i dont even have a toyota. looking to get a 24 rav4 hybrid this year.
@azaels911 not even close, Honda has really fallen off.
That's a joke, especially if it has a CVT transmission. Consult Consumers Reports. @azaels911
I drive a 2013 CRV with only 8,000 miles. It’s my “Sunday car” since my everyday car is a 2012 Fit with 130,000 mi. Both are excellent vehicles. I was thinking to replace my Fit with an HRV, except that all Hondas now appear to have CVT trannies. Not interested. I would consider a Toyota RAV4 LE with naturally aspirated, non turbocharged, non CVT. No CVTs for me, no matter who makes it.
The best mechanic I’ve ever seen. He’s honest too…a rare thing today.
I always like to let my car warm up for at least 5 minutes usually until the temp light goes out. And I like to change my oil every 3000-4000 miles / 3-4 months. My 08 Yaris Sport has 200K miles and revs like new. Replaced a water pump and AC condenser, brakes and tires.... feels like it has 800k left in it...
Also allow it to run longer to evaporate the fuel in the oil! In WW 2 Aircraft engines used gas to dilute the oil to help start in cold weather. then it had to run at normal temps for at least one hour to get the gas out of the oil! Also round engines used to get hydro lock in the lower cylinders from oil! Thanks for the great videos!
I agree with everything you’ve said except for one thing. You can wash one down, loose compression, contaminate the oil. The only way to fill the cylinder with fuel like that is a leaking injector. When the cylinders wash down to the point compression drops so low combustion isn’t possible, it still spins over allowing raw fuel to exit via exhaust valves or quite frankly, in the case of a wash down, go into crankcase as you said earlier. I would hesitate to deliver this car back without performing injector leak down on both port and direct injectors. Assuming that is a 3.4, it has twelve injectors. Six port, six direct. You can’t hydrolock one unless injector is leaking down while engine isn’t running. Not busting on you Sir, I’m just a tech myself who has experienced many wash downs as well as hydro locked engines. Vehicle should only be fueling if engine is turning over. Side note: Toyotas don’t have clear flood. Someone’s gonna hit the chip during a cold start on a Yota. Mostly every other brand does though. Enjoy your vids, wanted to clarify that. I replaced a 5.3 Yukon engine awhile back. Bent rod on cylinder six. No sign of fuel in cylinders once vehicle arrived. Noted the oil smelled fueled but cylinders were dry. Purchase a long block. Moved all accessories from original to new long block as one does. I asked a helper to turn the switch on to roll down a window so my scan tool cord would reach me at the front of the vehicle. It was a while ago now that I’ve said that😂 I’ve had wireless scan tools forever. Anyway, I was close to being ready to start vehicle for the first time but had the throttle body off cleaning it. When he hit the switch and the fuel pump kicked on I heard an injector spray…pulled the plugs. The hole with previously bent rod had started to fill with fuel. Almost did the same to new engine. I have the bent rod and piston on my desk. Made a lamp out of the camshaft of that engine so no matter if I’m home or working, I’m constantly reminded to slow down and check everything. Please don’t take this comment as anything but being helpful and if I’m wrong, please let me know! No offense will be taken. God bless.
You're making a valid point here.
I was wondering too how a modern fuel injected engine could flood a cylinder with fuel. Shouldn't be possible even with fuel pressure at max.
Something else must have happened, apart from the unconnected hose.
Have to agree. For just 1 to fill like that there is something up with that injector. I would def look further as well.
This motor is a 4.0 port injection only. You're referring to the motor they put in tacomas.
@@r1pthajacker128 it doesn’t matter whether it has port, direct, or both. It shouldn’t fuel when engine is off regardless of injection type. He had an injector leaking down. Love dudes content though.
I wasn't debating your theory, just letting you know which engine it is.
I wish you had made this video a few months ago!
This happened on my 2000 nissan xterra v6 and I experienced every symptom you described: low compression cranking sounds, tons of gas smelling smoke from the exhaust, and even a hydrolocked engine refusing to start.
After letting it sit for a day and bleeding the fuel pressure to do a leakdown test it started and ran rough until it cleared up.
Until today I was at a complete loss as to what happened because I couldn't believe so much gas leaking in could cause this.
To add to this, I had parked it in my garage to repair the rear drum brakes. My car is a manual transmission, so in the process of positioning the vehicle in the garage to work on it I had started and stopped several times from cold because I had to leave the car in gear every time I got out to check.
This condition has a name: "Lawn mower syndrome". Sometimes person would start the car and move it few feet away from the garage door, shut it off, get the lawn mower out, go back to the car which now cranks but does not start. There is no compression. Oil was washed down from pistons and cylinders during the initial start when extra fuel is always pumped in. Result was a tow to the dealer and a huge repair bill which strangely did not include any car parts. They will use some funny language to explain what they did to get the car running again. Basically, they took the sparkplugs out and put a spoonful of motor oil into each cylinder. They waited 5 minutes and then the car started, roughly at first and then quickly back to normal as the oil got pushed back around the pistons and cylinders. I told every member of my family and all my friends this: "EVERY time you start your engine, no matter the reason, always let it run at least 2 minutes before shutting it off".
Wow AMD, great advice. I’m very guilty of the start stop especially when I wash my cars. I start them back out, wash, restart and drive back into my garage. No more. I will take them for a short run before and after the wash. Thanks for the heads up.
The fact that only one cylinder filled with fuel tells me it's not a wash down condition but a problem with that injector dumping fuel or maybe even having a leak where it leaks over time while engine is off.
yes, that was my first thought. i have a hard time imagining a normal functioning injector filling up a moving cylinder even in open loop with max fuel rail pressure...
yes it will cause oil dilution cylinder wall wear and all that stuff but filling up a cylinder with fuel?
that thing was filled up while it was not running and thankfully starter was not strong enough and did not get a partial spin to bend a rod
He mentioned it at 4:25 not the injector
That was exactly my thought process. I was almost sure we either have a leaky injector or an injector driver that’s stuck on. But neither of these cases were true. The injector doesn’t leak after multiple pressure tests.
Lucky that it was only one cylinder.
Good thing there are never intermittent failures that test ok @@TheCarCareNut
I had replaced the valve cover gasket and the fuel rail on my Saturn Ion Redline. I put everything back together, went to start it up and it quit cranking after a few spins! I immediately quit, I started pulling spark plugs and cylinder 2 was full of fuel! I couldn’t figure out why, finally after much visual inspection I saw that I had pinched one of the wires to that injector and cut it! As soon as I turned the key it was shooting fuel into the cylinder. I cranked the car over with the plugs out and pedal down to clear the cylinder, repaired the broken wire, and all was good after that! I learned my lesson to really pay attention when reinstalling things. I also made sure to change the oil as well. Good luck out there!
2006 4Runner with 220,000 still running like new.
Just sold my 2004 with 350,000+. Still ran like new.
345,000 on my 09 Tacoma and still have a hard time seeing oil on dipstick when checking it with 4,000 miles. Truck has been properly maintained
@@nofyfb123do you use thicker oil in yours? I'm coming up to 300k and I've been using 5w-40 lately .
@@tomtom1541 No - I was using the same 5w-30 'til the last day I had it, and there was no noticeable consumption.
I absolutely love and appreciate your videos so much. I’ve learned more about my 4Runner and vehicles in general in the past few years watching your channel, than I have my entire life.
Glad to keep my 4Runner, boat and anything gas powered running in peak operational condition.
The last person working on the engine is to blame for this happening based on your stating they left the hose off.
I used to take my vehicles to the dealership until 1 day when they did tire rotation but failed to switch the TPMS position on the cluster. From that point onward, I started working/maintaining my vehicles. If they skipped/forgot such simple thing...what else are they gonna forget/miss/skip when it comes to other major items.
THANKYOU IM A MECHANIC MY SELF FOR OVER 40 YEARS BUT ALWays willing to listen and learn thanks again
I hope that customer held that dealership somewhat accountable for the hose mistake.
They'd probably deny it.
This is the problem with newer/larger shops and dealership shops. There's no personal relationship between the customer and the person who wrenches on your car.
I've been known to follow "my guy" across 3 to 4 different shops over a couple of decades. In the rare event something goes wrong - my guys stand good for it.
They deny everything even when you have proof.
Having a 2015 5th Gen 4Runner this was very helpful. I always let the car run 'when driveway jockeying'. I often will run them around the block when I have the time. Thanks so much for this.
There is one other situation that can cause the cylinder wash down in my experience. In the winter a few years ago in MN, I started up my 2003 Lexus ES300 in the driveway that I had purchased a few months ago used (about 7 years old, in great shape with zero issues and had a pre-purchase inspection). It was running so rough, shaking and spewing a ton of white smoke from the exhaust. It looked like a fog machine. I had never seen this before- what was happening? I knew basically that blue smoke=burning oil and white=coolant, but there was no issue with the coolant so I was at a loss. My mechanic found that the mass airflow (MAF) sensor was very dirty.
Being an engineer, I then knew what happened. Due to the bad sensor the ECM thought there was barely any air in the engine for combustion and the ECM compensated by dumping in a ton of fuel plus being a cold engine with richer winter gas made for a bad combination. That's never happened since, but every few years I clean out the MAF sensor with electronics contact cleaner just to be on the safe side. That was scary. Now I know what that term specifically is. Thanks for the lesson!
You're not much of an engineer. "Barely any air" is not compensated with "dumping a ton of fuel."
Thank you for your advice…I love Toyotas, I have 3 and a older Lexus for the family…all used vehicles and have treated us well…love your channel, wish you were in my area, New England, but. The awesome videos coming sir…
I own a 2010 SR5 with 200K miles. Hopefully, I can reach 400K.
No problem as long as you maintain it and take care of it
You just told me what is wrong with my son car, wont start and oil level went way high on dipstick, thankyou your awesome
Always love 4Runner))) awespme car
Never have liked to short trip any of my vehicles, I like to take it for a good long run every now and then, called a Italian tune up, your car well thank you for it, and it makes it run better
Rats chewed the ignition wires of my new 2023 4Runner. The dealer replaced the damaged wires. Just watched this and checked for the hose and found it unconnected and lying below. I pray no damage occurred. Pissed as hell.
Is it that little hose connected to a vacuum looking gizmo right behind the back of the air filter housing? 06 4runner 4.0
Have no idea why youtube suggest this video, but moms car has that same exact issue, its fixed now. Funny cause a lot of mechanics now days dont even know this. THANK YOU, BLESSINGS from the Caribbean
Watching from Uganda 🇺🇬
👋 from California
Hi From New York😂
Utah 👍🏻
Albuquerque NM
God bless Uganda laws. Yes, there is only male and female. Nothing else.
Thank you for this video, not only for the great outcome for the vehicle, but for the great explanation of HOW and WHY this happened!
We've heard the saying "Short trips can damage an engine." This video gives the step by step explanation of how it happens.
My 5th gen is past 200k miles. How about I bring it there and you can do a video of what it looks like underneath and how its aged.
Its already been said but let me add another sincere thank you for all you do in producing these videos for all of us dyi guys. You have been a god send in helping explain and show procedure and protocol in these repairs. I have a 2007 Lexus RX350 with 2GR-FE and your instruction has been invaluable in numerous repairs. I cant emphasis the appreciation for the professionalism and quality of your videos. I do all the dyi I can but i told my wife if we ever need internal work (Heads, bottom end, or rebuild or replacement) she should pack a bag because we vacationing in Chicago and dropping it off! Thank You Amd, taje care and thank you.
Very informative. If I was living in your area I'd buy a Toyota just to be a customer of yours.
I remember you mention that small hose/vacuum line from an earlier video with the same 4.0 liter V6 engine but this one really showed just how important it is to ensure it's attached (easy to over-look as it is hidden).
Love my Toyota 4Runner ❤❤
Thank you for your service to the automotive industry. God bless 🙏 😊👍
Isn’t the auto start stop gonna create the extreme short trip condition?
I remember reading an article published by the American Petroleum Institute back in the carburetor era stating that too many short trips in cold weather are engine destroyers. Oil typically needs to reach 180F before it lubricates effectively and it can take upwards of half an hour in cold weather to reach that temperature. Maybe modern oil works better, but I still change the oil more frequently in cold weather for this reason.
How was this not a stuck/leaking injector if only one cylinder had fuel in it? Also, how did it get completely full? I understand that a malfunctioning fuel pressure regulator will cause it to run rich but a rich condition will never cause any visible amount of fuel to pool, especially in a single cylinder?
The math doesn't math well😂
I'm scratching my head as well. One cylinder has a pint of fuel in it and he says the injector was good when he tested it? Intermittent bad injector? Not getting the whole story here.
I've never heard of cylinder wash down or hydrolock. Learned something new today!
1GR Master Race
2024 last year of the 4.0 😮buy it before it’s gone you won’t regret it. I have a 2007 bought it new. One of the best decisions I ever made. Still own it. Love it.
Didn’t Honda have oil dilution issues with the 1.5 turbo engines?
With some earlier models they indeed did. My 2021 CRV has never had it, thankfully.
Great 4 runner insider knowledge, I literally watched all your videos on the 5th generation 4Runner.