Toyota VVTi System Explained.Why They Rattle and How to Prevent Problems
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- Опубліковано 25 чер 2024
- A Toyota Master Diagnostic Technician explains the Toyota VVTI System in details, explains the problems they have and how to prevent them.
In this video we'll focus on the VVT-i System for Toyota and Lexus. First before we can understand any problems we'll dive into how the system actually works and what's involved.
Then I'll share with you the different problems on different engines that I've seen from experience. Those engines are the 2ZR-FE, 1AR-FE, 2AR-FE and 2GR-FE.
We'll also dive into some of the common problems with this system including the notorious rattle on cold start that many Toyota owners complain about.
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Wife's 2011 Rav4 2.5 had this rattle for about 3 years now and it would still have it if it wasn't for this video opening my eyes. Car starts up like it did brand new again. Thank you for this awesome video and please keep them coming! Love this channel!
What did you do? Take it for replacement?
@@scoobyrex247 took it to the dealership. Would've done it myself but I currently don't have the means. TSB t-sb-0041-13 addresses the issue.
I'm liking the background and the table. the whole presentation seems so simple, yet so professional. you got the power, you got the flava.
9:10 That is very legitimate point that you made here master! I am a GD&T engineer. I totally understood what the design issue was which was not correctly assigned tolerance ranges both pin and hole. That totally makes sense to me. I appreciate the time you have taken for us.
9:26 That entire mechanism needs to be redesign by a supplier other than Toyota. Since TOYOTA did not correctly calculate the tolerance limits of this entire mechanism. Or you should take this apart and add very precise spacers right behind the veins. So that when expansion and contraction take place those spacers are going to stop veins to come off of their places.
you sir are a good man, im just a 25 year old from australia , and ive learnt so much in 22 mins from your video about just , the heart of how a car operates , its amazing to see the detail and in depth look on how gears and oil plays a part - thank you -
liked & subscribed
I have a 2015 Camry that had the VVT gear rattle and Thanks to your video I knew what it was and that I needed to get it fixed ASAP- Thankfully I was able get it repaired under extended warranty before any damage was done! Thanks AMD ! Keep cranking out the great videos!
Finally. I'm looking for this video already two years. Thank you AMD!
Wow, this was an important video and very good education... as 2009 sienna owner, i'll be listening for this! I hope our local toyota techs are as good as you.
I would love to see more videos on the later 1GR-FE engines like the 2015 Tacoma. It's hard to find much bad news or good news about them. I guess that's a good thing.
Thanks for the clear explanation on how this system works. My wife's 2015 Rav 4 does the rattle after a cold start. It drives me crazy!!
Thank you. I knew what VVT was but I had no idea how it worked. Now I have a much better understanding of the VVT system.
Having noticed sludge at the main cam bearings in my 2003 Corolla, i carefully studied the VVTi and finally opened up the VVTi. The VVTi was full of sludge and the oil ports were literally clogged. Had to use several solvents to dissolve and clean the sludge. Use is made of universal socket wrench for the 5 headed bolts and torque wrench to fasten the bolts. Torquing the main bolt while keeping the lock-pin unlocked, was a little ticklish. Thanks to Toyota, the cam bearings were numbered and marked, without which i might have failed to reasseble the cam bearings properly as a DIYer. After purging the sludge from the VVTi, OCV and also from all the oil galleries, the Engine's performance improved like new. Thanks for your precise and detailed videos🙏
Nice, I am looking to attempt this. What engine is your Corolla? @PrasadKakara
Switch to synthetic over the next several o/c. It's a detergent oil, so it should continue to flush out those right areas you may've missed
I never hear you talk about the 1.5 Litre 1NZFE engine but I love learning new stuff!
Great info AMD !! Much insight here as always. Thank you for your efforts helping us understand taking care of the car in the real world.
In Australia Toyota have gone to a 12 month/15KM (9K MLS) oil change interval with the M20a engine. I purchased a new Corolla 3 months ago and raised this with the service department who told me all was good and not to worry. I always change my oil every 6 months or 8KMS whichever comes first. Now i'm retired it's six months that comes first, as I'm not out and about like I used to be. They say i'm just wasting my money doing that! I'm also a retired shop owner and agree with you 100% on your recommendation. So i'll continue to do my own oil change@6 months using genuine Toyota 0-16 and oil filter despite what they say. I'm with you brother on this one!
Same toyota recommandation here in france ! I suppose 2gr RX450H is concern about this ?
12 month 15k interval is perfectly fine. Just wasting good oil any earlier. My 11 year old Camry has always been serviced at 15k intervals it runs like a clock after 218000 kms. Toyota know their engines, they bench test them for hundreds of thousands of kms. If they schedule a certain service interval stick with it. Can void your warranty if its not adhered to.
If you are using a true fully synthetic oil of reputed quality.... And your engine is not old enough, say 150 k kms done..... Then you can take interval to 15k kms .
I have a 06 nissan 2.2 dci (nissan japan) done around 200k kms. I use idemitsu 5/30 semi synthetic or shell synthetic before at 8-10k kms
Agree. I personally replace oil every 5,000km - just a simple DIY drain and fill. I change the oil filter typically 10,000km or 15,000km as per the user user manual (depending on the car). So far no issues with my vehicle’s engines with 250,000km+ on them.
Never any major work on them (knock on wood). Spark Plugs, user serviceable wearable items, filters and regular quality fluid changes is all I’ve done. Toyota/Lexus vehicles are very robust so long as the basics are taken care of.
@@ezymarkz all companies earn the profit in after sales service and spare.... Hardly any significant margin on sale of new vehicle.
Their aim is to recommend service intervals and service parts such that the engine runs without any major issue just enough long .... This just enough long is mostly warranty period and kms . Say 100k kms and 5 yrs .
Moreover petrol engines hardly go bugy when timely maintained. Diesels need attention of service like interval and oil quality since they run sooty and stressed. But modern diesels are even robust.
All in all its all a global propaganda about service and oils. Its purely dependent on how and where engine runs. A homely city driven car may go twice longer without service as compared to same car in taxi run. Still both are recommended same interval and oil . Why?
Just showed my father this video and he thanks you for explaining it so well
Much appreciated the video on the VVT-i system,Amd. Your explanation of the timing chain was very useful. Thank you.
Thank you my friend. This solved my problem of rough idle at stops. Simple and cheap. You are an excellent teacher. Love your videos.
Did you replace the VVTI assembly yourself?
@@Shade_Tree_Mechanic No , I will fix most things, but I have a full time job that I use my car for, so I am not pulling an engine or tranny. Besides, it ran fine for 200k with a little rattle for 1.5 sec on start. If you flush the oil and replace every 5k it's not a problem.
how is it cheap it requires the removal of the engine to fix this problem
My 2005 Scion XB has a 1.5 L VVTi engine. No problems with 236,281 miles to-date. Very reliable Toyota engine. Love this car. Admire all the knowledge your channel is providing all of your subscribers. Keep up the excellent work.
Maybe your 1.5 engine didn't have variable valve timing issues.
@@adamb84 1nz-fe engines do have vvti
@@lenardkareem5551 Yes the NZ series has VVT-i on intake cam....But there is almost ZERO issues as long it has been maintained every 5,000 miles (Doesn't Matter if Good Dino or ULTRA Synthetic, contamination is contamination regardless of what TYPE of oil you use.)
Got an 04 Xa manual transmission that thing still runs like a champ...
I have a 2010 Sienna with the 2GR-FE engine. It has 235,000 km and has been trouble free. A huge thanks for the heads up. I will check with the dealer about
2014 Tacoma 2.7l VVTi. Cold starts in the winter makes a knocking noise for maybe 15 seconds at the most. The audio sample you played at 7:45 sounded nothing like what im hearing. i got it new in the fall of 2013. Always maintained, 104K miles. Love your stuff. Great job.
Good information and advice! Appreciate you making these educational videos 👍🏼👍🏼👍🏼
I love you mannn - keep making Toyota specific vids!!! This is the best explanation of how the VVTI mechanism works! Thanks for your content!
Watching from the Philippines 🇵🇭.
Thanks for sharing your thoughts and knowledge to us.
Thanks again for your videos! I just purchased a 2010 TC S. I am a long time subscriber, and learned so much from you. So, a vvti engine is new to me, but I will be watching you more!
I have been going through some adventures with my 2007 Camry. It's been making tapping noise intermittently sometime when accelerates and sometime when the gas pedal is released. I had it taken to the mechanic that I have been taking to the last ten years. They thought it was leaking oil and changed the valve cover gasket that they changed just a few years ago. Now I know how they are and I will never take the car back to them. They said they couldn't find out what happened and told me to take it to the dealer. The dealer said it has to do with the VVT gear and told me I should change all of them for about $8K. I found a new mechanic shop. This mechanic seems to be a very nice guy and told me since the tapping is not ongoing it should not have to do anything with the engine and the sound is coming from the dash. They did an engine flush and the car actually runs better but the tapping sound still comes up. I am praying that there is no issues with the VVT gears. Amd, if you happened to read this, I hope you can give me your option. God Bless!
As someone who's semi-retired and doing his best to keep a 2000 Toyota Echo going as long as possible, I'm delighted by your channel. I've also got a VVTi engine, the 1NZ-FE, whose primary use seems to be in some models of the Prius. I'd love to see you discuss it, and in particular how to prevent the oil consumption problems in the pre-2003 models along with how reasonable it would to replace the pistons in those years with the revised pistons.
I am thinking of changing the rings in my 2000 1nz-fe as well. Are the pistons in the newer ones different as well? And are they compatible with the early 2000s model?
If you make a video tutorial tag me. My family has a few echos, and I might inherit one one day, but in general I like to help with car maintenance on family cars.
I had a light blue Echo w ultra low miles that was pristine. I babied that thing. Ran exceptionally well and was easy to care for. It got wrecked, not by me, and I was very sorry to see it go. Quite possible one of the best cars I had. Glad people appreciate them. 🙏
Excellent !! Thanks for taking the time to create such an informative and in-depth video which explains the issue and the preventive actions. Wow…
Great guide. My engine made same noise and my mechanic advice a change so we did and can't hear it again. You just thought me what was really happening.
Hello, you saved my LX470 transmission. I did a drain and fill last week. Only 1.5 qt came out. It must have been the fluid level where I was getting the P2714 code. I added 3.5 qt and followed your instructions on checking fluid level. Now everything is back to normal. I’m planning to do one more drain and fill next week to get most of the old oil out. Thank you for your videos. MR
Hope you get this. Check out the video he posts on transmission oil changes. Essentially, you do not want super clean oil for transmissions. The clutches need a certain ammount of "debris" in the oil . Without it, they will slip . Sometimes badly. He also recommends to never , never flush a transmission. Hope your transmission is doing OK.
Experienced advice on avoiding the rattle (at least for the GR series): if you don't want it to rattle, let engine idle for a minute before shutting down overnight. It helped me 100%
Interesting I'm gonna try that, I've been playing around with different oil/oil filters, still a silght spuddering noise on some start ups 2zr fe 1.8L current have ultra platinum and swapped a full synthetic media oil filter and has been slightly better to begin
Turn it over three or four times but don't let it start on the 4th time let it start this allows oil to pressurize up into the vvti extra critical directly after oil change I've had my 2013 1.8 L Corolla since it was brand new the vvti started a knocking around 120k currently sitting at 180k. I warm it up slow and proper and after 5-10 mins of grandma driving i redline it to 90mph for my 45min commute. The corolla is a tank 5k oci is the only thing it gets. Oh i run 2-3oz mmo or tcw3 in my gas aswell pulled plugs at 126k looked brand new bit of oil in #3 cause tube seals but never even changed it slapped in new plugs it burns about half a qrt in 10k so i just pour the whole 5qt jug in her. Factory paper toyota filters from walmart are 8$ and fortnine shows you why paper beats synthetic for filters
how do I turn it over without starting it??@@yzrippin
@jacobdunnohew23 you crank the engine. Like you would to start it but then turn it off before it actually starts. This turns over the engine a few times. Getting the oil to pump up before actually starting it. Btw your on google go look up turning over an engine.
Mate, do you think adding a cleaning additive to the engine oil for a period of time would help if the pin has build up?
I had start up rattle and engine rattle at all times never really though much of there being a difference but the start up rattle went away and higher revs the nocking sound went away so just finished replacing the intake cam gear, also tried doing it with the chain cover on, crank shaft slipped so i pulled everything went to put the valve cover back on and noticed the exhaust gear looked funny one side was higher thought it was becuase of the shape of the spring didnt think much of it went to clean up the chain cover and the exhaust has been grinding away my valve cover, ive just bought this off this guy they where having marrige problems and the wife took off and months later came in the shop with a litter of oil left in her, messed up all those pins in the cam gear, keep up the videos!, started it up she sounds brand new! God bless you
Thank you for your videos AMD! We appreciate what you doing. Have a blessed day as well!
I drive an ‘09 Corolla with 112k miles. No major issues with it except the inevitable VVT-I rattle. Doesn’t burn or drip oil. Coming from domestic cars this is an unusual experience.
Oil changed at 5k miles religiously or sooner whenever the car was driven less. Definitely will be looking into a parts swap soon. Especially since the engine can grenade (did not know this before). I want to keep the car even though it is turning 15 years old. Was thinking about trading it in, but I can’t bring myself to do it.
Same. I have an 09 Corolla than "sneezes" when it cold starts in winter. I've found 0W-20 oil to help better than 5W20.
@@stevecooper7883 YESSS, my '09 2ZR-FE (Pontiac Vibe) sometimes does the "sneeze" - which is completely different from the rattle described here. I haven't been able to find out anything about what causes it. I'm wondering if it's something to do with the starter motor engaging/disengaging. I didn't know about the potential grenading. Hope it's not a big job to replace the cam controller.
I have a 2007 Corolla with 76K miles. It has been garaged all its life and is, as they say, in “mint” condition. I am Obsessed with keeping it clean and with oil changes. I guess I have been doing all the right things without really knowing why.😊
I’m going through the same ordeal on my Nissan Micra. Funnily enough I already started tapping the thread into the outside solenoid that’s stuck in the block. I’ll resume work on it tomorrow but wanted to see if the internet had any other ideas too. Great video man, thanks for sharing either way.
Such a beautiful way of explaining the technical aspects.
Love from India.
Great video and I really appreciate all you do.
Very informative! Thanks for the video.
Learned a lot about VVT-i today. This channel deserves more than just a subscribe.
Excellent & informative video! Thanks for going to the trouble to make it !
I think mine is starting to make that sound everytime in the morning in cold start. Can you do a follow up DIY on how to remove and install the new vvti please sir!
Yes please, and guys let's top this comment so AMD can see it!
And please on an rx with a 2gr. Does the engine have to come out?
Cheap bastard, you're gonna granade your engine
@@bry94608 I think so. Even if not, some loosening from mounts and jacking would be required
Full synthetic oil fixed my issue. Not a cheap blend like they use. Don’t trust mechanics.
This was helpful because it showed and explained all of the systems.
One thing that would be super helpful would be to display what in layman’s terms is the engine you are talking about. For example
If you said the C-3PO QG7 or what have you, if you could display in the corner 3.0
And what year and models .
Because we have no idea the names of these engines.
But extremely helpful, thanks so much.
We buy a lot of Toyotas and this was really helpful
THANKS A LOT!! It’s a very good vidéo and so compréhensive technical explanations! I own a 1zr fe vvti with 126000 km and it feels really good. So now i will continue to take care of my Toyota more efficiently! Thank you!
This man is the king of vvt. Thank you
Wow! You not only are highly competent in your profession, you also have the ability to explain in easy-to-comprehend
language, that people can understand. THANK YOU, IMMENSELY ❣ ❤ 100% ❤ Roland Singh, Canada 🇨🇦
He is one of the rare, hard to find honest mechanic that doesn't try to sugar coat anything.
@@mrvang8077 - I couldn't agree, more: you are absolutely RIGHT ❣❣ Roland Singh, Canada 🇨🇦
Well said Roland
Excellent aa always! Even if you have little time, EVERYONE should listen starting 17:20 about oil changes through 19:30. It's well worth the two minutes.
My 2003 Corolla always makes this noise for 1 second only after the first start after a fresh oil change. But that's the only time it makes that noise. going on an estimated over 500,000 miles closer to 600,000 miles and still running like new. By the way the odometer stops at 299,999 on all these models (2003-2008) Corolla's.
@@jamesmoody7162 wow Space Shuttle mileage - well done James !
Thank you!
F6c)drhdgfhjdmdj(fnchd)
Mobil 1 is one of the very top performing oils, go full synthetic.
Another realy nice and educational video! I love it!
Looks it's been filmed in the new shop.
You're so right about the Toyota timing chains versus other makes of timing chains. My Camry with the 2.5 timing chain is $172. The timing chain for my Lincoln Town Car with the 4.6 v8 timing chain costs a rediculous $30 from the dealer.
Excellent. Thank you. Much needed overview and reminders for DIYers like me. It is in the details where the truth shines.
Awesome and detailed explanation of this issue! I have an 09' Matrix 2zr-fe with almost 260k miles that rattles every time I start it. Had this issue for the past 150k+ miles and also burns oil like a motherf*cker. I always change the oil every 3-5k and top off every week of driving. Great little car in general but this is something that Toyota should've addressed and fully reimbursed.
@Kamil Zieba darnit! 1ZZ-FE engine would have been not the oil burner. I have an 06' Matrix with 1ZZ & it is fabulous even though it's been used daily for 16 years, & racing for the last 3 years. No overhauls ever. Looking forward to the next 300,000 km of driving, keeping fluids clean & maintenance.
Screen filter for vvt ?
tried pre-oiling yet to see if it 🛑the bad habits? or not a usable idea?
My 09 corolla use to rattle sometimes if it was a cold morning. I noticed once i changed the oil it went away. I recently got the car so it was the first time ive changed it since I owned it and its seemed to have cleared it up. I didnt go cheap on the oil though. I put 0w-20 mobil 1 EP HM and oem filter. My buddy was suggesting if it came back to add some atf to the oil to clean up the vvti sysytem.
@@biohazarddream710no need to add ATF. You can shorten the oil change intervals because they have detergents in oil. Quick short changes can act as a flush. I've even kept the same oil filter on the 2nd quick change.
One of the best channels for Toyota lovers 😊
You're the best!, you saved me from buying unnecessary parts.🙌
This man is honest and yes the vvti system is very delicate and it needs babied.
Thanks for the information. my 2008 sienna with 200k miles, i bought it a year ago. it used to make a horrible loud rattling sound on warm startup. I do not notice any rattling in the morning or when the engine is cold, starts really smooth. That warm startup rattle used to bother me so much, i tried using different brand oils and filters. Toyota oil filter and mobil1 0w30 absolutely improved it. it rarely rattles now, and when it does its for a split second barely can hear it.
Exact my problem 👍🏼
I thought there was a recall on that?
Thank you so much for your explanation and video. I have 2015 Corolla with 2zr fe engine. On cold startup, it sometimes make a rattling noise, kinda like a loose muffler clamp. In fact, I kinda thought that’s what it was (until I saw this video). Therefore I didn’t complain to dealer. Always went away after couple of seconds. I change oil every 5k miles or 6 months. Engine has only gone couple times to 10k miles before oil change. Car was a rental at a dealer. Engine now has about 162k miles. Doesn’t burn any oil. Have always used mobile one synthetic.
What parts do I need to change vvt gear?
Thank you and keep up the great work. Your videos are great and I wish you the best in your new endeavors with your shop. 😀
I disassembled that one on our 2004 Corolla and literally worked cleaning it for 2 days, studying it and then back together with one replaced screw as it failed; still have another set from another head form a 2003 Corolla, Thank you for this video, I always wondered why go with that engineering when Toyotas are famous for oil use which starves engines and causes slugging almost to every one. The one II cleaned was full of this sludge, I do not remember the rattling but Im can tell you the engine overhaul was due to almost no oil, even with regular oil changes....twice!!
Thank you for another very informative video. Not very mechanic is created equal. You are an extraordinary knowledgeable & skillful mechanic with high morals and highest work ethics. As part of my maintenance of my 2004 Lexus LS 430, currently it is at 230,000 miles, I plan to have all front & rear suspension components changed with OEM components. I wish I live in the same city as yours, so I can have you work on it. My car is always being serviced by my local Lexus dealership. Again, even at the dealership, not all mechanics are created equal. To be honest, from my experience over the years, there are few very lazy mechanics working there. Few months ago, I had my 5000-mile oil changed, the mechanic did not place back all the grommets for the bottom cover. As I was on my long road trip, on the freeway, part of the bottom cover came off & was dragging on the freeway. By the time I got off the freeway safely to check what the loud noice was, almost half of the cover was missing, while the remaining hanging piece was still dragging on the road. I had to buy some duck tape & go under the car to tape up the hanging portion. Even when I got back home and had a new cover put on by the dealership. My regular service advisor and I were just happened to check under the car just before I leave the dealership to find out the the mechanic who worked on the new cover replacement had at least six holes missing grommets. My advisor had to take my car back in to ensure all holes have a grommets in it. If we did not check, I may have the same problem again driving down the freeway.
I took my off on every car. No need to have them there beside the front. Not those hanging all the way back to the exhaust pipe, pointless.
I say this is because I work on my own car, thorough my life, everyone are no issues.
But since you said you have dealership and shop work on your car. The last thing any mechanic want to to see is cover grommets under the car. A hassle to remove and a hassle to put back on. Remove for their sake or anyone plan to work on it. Trust me.
Please do a video on replacing the VVTi gear
Yeap, I always learn something when I watch your videos. And this is a big one.
My 2011 RAV4 is taking care of me for sure. 5000 mile oil change. Some cold start rattle that disappears, very interesting thank you ...
Thank you for sharing this. Very informative. What is the typical cost to change the VVTI gear through Toyota?
Man, I wish I was where you are. I would definitely come to your shop. I'm going to change both of my VVT gears on my daughter's 2010 Camry SE 2AR-FE engine. Hopefully, I can do it without pulling the engine. 2nd I don't see anybody saying anything about any gaskets when putting the covers back on. And thirdly are the 2 VVT solenoids the same on the top cover? Thanks for your videos man. What a wealth of knowledge
Cool to see the actual parts
This is the best video I've seen about this issue great job
Thank you for your excellent and “ best practices” videos. I would like to know if you have ever done the vvt tsb on the gr engines where the gears are replaced by only removing the vc and camshaft. I have a 2006 IS250 with 202,000 mi and they rattle every morning. I would like to perform this repair to keep my IS running, it’s a great car. Any advice or tips you could offer would be greatly appreciated.
Thanks for a great video! My 2013 Camry with 2AR 4-cyl rattles for exactly 1 second upon cold start. Engine has 160K mi and has always done it. What should I do?....this is a GREAT engine in all respects!
Such quality content. Great presentation.
18:54 i n my dad love our 2012 fortuner, got a 2tr vvt-i and its so tough, after the engine being used up since 2012 till 2021, when we checked the health of the engine after using it for nearly 200k KMs, it still showed 80% health!! toyota is something more than what it is ❤
He is absolutely right bad cam gear can destroy the engine but the timing chain tensioners also go bad if these items are replaced your in good shape and Please use OEM Toyota parts not the crap off eBay
Hi AMD, great video! I have a '10 Corolla LE 1.8L with about 120k. I don't think I have the VVTi rattle at cold starts, however I get a screeching belt noise at cold starts. I got my serpentine belt replaced at 90k like back in 2018. The first time the mechanic didn't tighten it enough and sounded like it was slipping. Then I had a toyota shop tighten it per spec. However, it still get a screeching sound on cold starts. This is on a dayco 5060485 belt. When I originally bought the car in in 2010 from the dealer, I used to get the screeching sound with the toyota belt. However, this would only happen in the mornings when it was very cold in South Florida, which is rare. Now with the Dayco, belt it doesn't matter whether the weather is cold or not. The screeching noise just typically happens on cold starts. I notice if I put the key in the ignition and don't start immediately and move the key back and forth before the start, sometimes this action prevents the screeching noise. Any thoughts? The Toyota shop that tightened it previously said that if the belt keeps making the noise, then just replace it.
About the key part. I read some where About not starting immediately but a I haven't got someone to explain it fully.
I can’t speak to that but I always use a Toyota belt , it’s $2 more and worth it to me
Thank you so much for the work you do and thanks for this amazing video! 🙏💛
Get video! I need to learn the engine numbers. Thank u so much for telln us a while back about changing oil @ 5,000 miles. I have learned so much from u! 👍
Amazing video and technical content, AMD…as always! I’m assuming my ‘06 Lexus GX470 with the legendary 2Uz-FE also has this potential issue. I hear it ever so slightly when I start up. 208k miles. Now I know why!
Likely a different problem. This rattle is pretty specific to the type of VVTi gear shown in this video. Your 2uz has a different type of VVTi gear that operates using a splines and a kind of hydraulic piston. You can find info online. These gears are common on toyotas timing belt engines with VVTi. I'm a toyota master tech and I own an LX470, check your fuel rail pulsation damper. I've seen those make a similar noise. Also exhaust leaks on manifolds very common.
@@v12prowlerthx for the advice! I’ll investigate further on the next major service.
I bought a 2008 Highlander with the 3.5 V6 and 180k miles. About a year after I got it I started getting that very brief rattle, but it would also do it sometimes even when the car was warm. I saw a Scotty Kilmer video that said sometimes the sound can actually be timing chain rattle because the chain tensioner is “oil driven”, and if the tensioner gets clogged up from dirt, lack of maintenance, and so on so that the tensioner does not get enough oil pressure in it right away. He advised trying the ATS oil treatment and changing the oil. I did that and changed to full synthetic. That was 8 months ago and the sound is gone and has not come back.
ua-cam.com/video/F7WwSl46tL8/v-deo.html
@michael hajba well there ya go! ATS is great stuff!
My 2GR-FE engine always does rattle being hot…
I would use an engine flush every oil change too , Liqui-Moly or Amsoil .
Well, our 2008 highlander variable valve timing actuator lost a bolt at about 110k, and we ended up spending 6k on a used engine. Now, we're at 240k and it is still doing fine. But, 6k for a used motor - if mine rattled, I'd bring it in! The other things that messed up on that 2008 are external oil lines at the bottom front of the motor ($60 and an hour to change) and one other external line up near the valve cover - can't remember the cost of that, but less than $100, and easy to change. Both leaked, but we caught it before the motor lost all oil pressure, by some luck.
Well done. Explained perfectly.
Amazing video! Well explained! Thanks for the content and the advices of course! 👌🏼 It is a really helpful video!
These camshaft sprockets can replace in vehicle . 4 bolts tensioner housing, then remove 2 bolts attached to the tensioner. But be very careful when doing this. Make sure all timing are top dead center. All Mark must lines up of all sprockets. You will need a helper to lift 2 camshaft out while you holding the main drive chain, then keep the main drive chain tension at all time by using something like zip tie to attach to something to keep the main drive chain tension at all time.
Technically this is not replacing the sprockets in vehicle. However if you mean you can avoid pulling the whole motor or timing cover you are correct. Of course anyone attempting this should also use a half inch bar and turn the engine over by hand, checking for proper timing once they have reinstalled the chain and tensioner.
Hey AMD, thanks for sharing your deep pool of knowledge. I have a question please.
I have a used 2010 RX 350 and I am concerned about the problem you mentioned at 13:35
Does this noise you mentioned stays even after the engine is warmed up or does it go away?
My car has a clicking/squeaking noise (my guess is belt pulleys) for first 1-2 mins on a cold start but slowly goes away and then no unusual noises. I am going to get it looked at the next service but I am concerned after watching this video. Can you please help me? Thank you and bless you for educating millions like myself. Much love
I’d say you’re right about the pulleys.
Very good information! Thank you!
Everything is good when you are a nice person. Very nice presentation. God bless you.
This is also common problem on 2.4 L Honda engines, VTC actuator rattles on cold start. It is especially more noticeable during winter times
yep, same issue with my crv, irony is when the oil got older, the noise went away, came back with fresh oil.
@@saeedhossain6099my guess is older oil becomes less viscous so it’s faster to be pump
@@FerasAlhawas the issue with the honda vtc actuator is that as the engine cools down the oil that is suppose to normally stay in the actuator leaks back into the oil pan, and the rattle occurs at start up for the oil pressure to come up to the head. often the symptom occurs in winter on the 2.4l. the older oil is thicker so is less likely to leak down
@@saeedhossain6099I've been working through this issue on my CR-V for a while. I've replaced the spring and worked over the locking pin to allow it to move in and out freely.
It made the rattle much quieter and shorter, but will still rattle after twice as much time transpires as before.
Before I had it quieted down with a new spring and smoother out pin, on a cold start in 15* F weather, it did not rattle at all.
My rattle has occurred in all temps, but most notable is that within a window of time (now increased), the rattle is gone after the first start.
If I wait about 4 hours now (was as soon as one hour) it will be back.
My 2010 Accord EX 2.4 L with 120k miles just started making that VTC noise on morning starts in the colder Nov to April weather, or if it's been sitting over 4 hours. I change the oil every 5k with good hi-mileage syn oil. Guess I need to take it in soon. Should replace the spark plugs and check the valves while they are in it.
I have the A25 engine in my 2020 RAV4.
I've been using Mobil One 0W-16. The oil is changed every 6 months. From Nov 2019 till now the vehicle has 9200+ miles on it and it runs GREAT!
Remember this. OIL IS CHEAP, ENGINES ARE EXPENSIVE ! ! !
It's not only the timing chain and gear parts, it's the wear and tear on piston rings, on crankshaft and camshaft bearings, on connecting rod bearings and MANY other rotating parts!
OIL IS CHEAP! ENGINES ARE EXPENSIVE ! ! !
Thanks again for your in depth knowledge!!
Thank you .... for new knowledge and saving many toyotas from going to the junk prematurely
You forgot to mention the Plastic Filter w/Screen that is inside the engine block.
If this is clogged due to extended oil change interval, replacing or fixing the VVT's would just be temporary. Nice Video by the way
Cleaning the vvt filter is how I came upon this video. No fun taking off the power steering pump
I thought the two gr had flaws in it that's why I'm sticking with the 3.3 V6.
Great video Ahmed! It’s too bad Toyota and Honda’s can’t prime the engine with oil prior to starting the engine, like all domestic brands can. At least the domestics can alleviate symptoms with flood mode.
how does an American car prime the oil without starting
@@billdeason6212 hold the brake and gas pedal all the way down to the floor at the same time, while trying to turn over the engine. This is called "flood mode"
so you hold the gas pedal and brake at same time, while turning on the engine? I have a push to start highlander@@youngb1ood
Old Jeep 4.0 engines did this by not enabling the injectors until the ECM sees 2 full crankshaft rotation. Good design, and likely why those engines last so long.
Very informative video. Thank You Sir.
Been chasing a rattle from an ES300 with your favorite engine the 1MZ-FE for a while now in the fleet. It's in it's mid 20's so for a car, it's tough to get them to fix anything on it. Could be different. I don't believe it's the i- version. but they subscribe to time is money so they are slow to respond. Glad to hear Toyo guides are not easily broke. That was a suspect for a while. As was the timing tensioner. Seen a video lately that said not enough oil was getting to the gear so do a valve cover replacement with the small o rings inside the cover. One is a figure 8 double o ring. The engine seizing and grenading is scary to think about. Lukily they are using it for very low miles and local in town no freeway driving. It's peculiar. Many symptoms that fit other circumstances. Startup rattle for 5-8 seconds as you said. But also rattle from 1800-2300 rpm and none in the rest of the power range. They greatly fear the parts cannon. Hard to say, because I want to save the car but also not scare them. .
I love your videos, i just wanted to say that the timing chain on the mercedez 3.2 is a triple chain it makes the toyota chain look like a joke. Like the ones on the 22r bicycle chains.
Morning car care nut! May god bless you and keep you!
Thank you for the outstanding video. I am having two loud knocks on start up on my 2012 RAV4. I am pretty sure this is the problem even though it sounds different from the soundbite in the video. The Rav I have is one of the VINs affected.
I am a member of the Toyota vvti rattle club. I had this issue from New. I fixed the problem 30,000 miles ago. Out frustrated irritated by the Dealer telling me it's normal. The answer was simple. 5-30 oil...period. Now 45,000 miles later and I am a happy camper. I know everyone will argue with me 😮but for me I don't rattle anymore. Just stop using that damn water oil....its way to thin. And no after 45000 no vvti check engine light and no more noise.
Hi Leon. What engine oil you use now ?
10w 40 or else ?
My sister had a 2009 RAV4 with a 2.5L engine that I always changed the oil every 3 to 5000 miles and it still had the problem. She eventually traded it for a 2018. If these were production problem issues why didn’t Toyota cover these. I have a 2013 RAV4. I noticed if it sits for 2 weeks, there is a very brief light rattle sound. Can I assume this is normal since all of the oil is in the pan? This is similar to the first start when you just changed your oil.
This was very good! You could be an instructor in auto technical school! God has gifted you to be able to explain things well.
So at 12:52 you talk about the collar coming off, and how this occurs in the Sienna (mine is 2009). Do you recommend being proactive and having that replaced preventively at a certain number of miles like you would do with a timing belt or fuel pump?
Really enjoy videos like this. Well done sir 👍
Thank you AMD for another good Video 👍👍
I have the 2AR. The intake cam gear has been replaced twice under warranty and it still does it. Unfortunately, the part hasn't been updated so they keep replacing a defective part with another one, lol.
how long does it do the rattle? My 2012 camry does the rattle at cold start for 1-2 seconds. I started using Liqui Moly 0w-20 oil and it only does the rattle for a half second even at very cold starts. Now that it's warmer weather, maybe for a quarter second. I should also mention it is very vital that oil on these engines should be replaced every 5k miles or sooner depending on the driving conditions. Toyota engines are very picky about intervals. If you live anywhere that gets cold enough to have snow, stick with the "severe" interval, which is 5k miles.
A half a second rattle😂😂😂, dude the quick rattle on start up is not a problem, once it stops your ok 👌, I’ll have to get my stopwatch and time mine in my Lexus is300h…
@@hadi8561 Tell that to the Toyota dealers who will only do two 10K mi interval oil changes over the two years of the free Toyota Care service.
@@whoknows8678 I’m concerned about this too. My 2010 RX350 has always had synthetic oil changes once every 10,000 miles per the guidelines/manual. I’ve had the car since brand new so next month will be 12 years that I’ve had it. Now I’m starting to think I may need to start changing the oil every 5000 instead of 10,000 miles🤔
Hi! The 2AR makes a quick rattle that can be normal and not to be mistaken for a VVTi rattle
I've seen engines evolve over the years that the recommended engine oil viscosity changed. 5W-30, 0W-20, 0W-16...was this done to allow to make access to the vvti system easier? Other factors that helped make the change? You are amazing sir!
Look up adept ape he does diesel mechanic videos and explains the tight tolerances in the 10s of thousands of and inch range.
Thanks! this was a great video and really helps to explain the vvt-i system thank you very much
My 2019 Camry SE has made the same noises not long after I purchased it. I took it to the dealer back in 2019 and was told it was fine and nothing to worry about. Mind you a shared the videos I took. Well fast to today (June 8, 2022). I took more videos, which I shared again. Proof of rattle like you shared as well a a higher pitched rattle whining type noise. The dealer said it was fine and 100% normal. I stated the noise lasts for sometimes for minutes before it stops, after sitting overnight. I was told that the system is smart and that it was a process that the engine goes through some kind of cleaning process. That NO sense. Anyway it has been documented twice now. By the way I now have 35k miles. I even told them I wanted to make sure imthe car was ok because was going on. Trip 3k round trip. Hope all will be fine.
BTW I change my oil no more than 5k miles, of course synthetic oil, and no more than 6 months.
Thoughts??