5.7 Hemi Ram - Bad Misfire & Will Not Idle
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- Опубліковано 22 тра 2019
- In this video I have a look at a 2004 Hemi Dodge Ram that was dragged in as a no start. Doesn't take long to find the root cause of the problem and the misfiring cylinder and it ends up being a pretty easy fix in the end. -Enjoy!
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Immediately after you said the EGR was probably aftermarket junk, the video was interrupted by an ad for O’Reillys. The leading supplier in aftermarket junk. That was perfect timing.
I have seen several Hemi's with broken valve springs and rocker arms. When I was Fixed operations manager at a full line Chrysler dealer one of our rookie, fresh out the cap program, techs had one with a misfire code. He swapped the coil and injector and the misfire stayed in the same cylinder. He said he didn't know what was wrong because it checked out electronically. I told him to rev it up, it was popping in the intake so I told him to pull the valve cover. because there was a valve train problem in that cylinder. He pulled the cover and there was a broken rocker arm. He asked how I knew that by listening to it. My reply was remember I was a tech for 30 years before I was a manager, when I started in the business in 1968 there were no computers. You learned a lot by observation of symptoms.
grant wright Most times if everything checks out electrically. the problem is mechanical.
And then everyone clapped
Nice fix! I learned a lot by listening to engines!!
Computers have made millennials dumber than a box of motherboards. Turn off the power and they're USELESS.
@@joeashbubemma I'm a technician and I'm better without computer. Im 29. Don't forget gen z is old enough to vote now lol
That dude was so lucky! Awesome video, thanks for sharing!
No kidding! Eric should have called him and said, "Dude, you need to go out and buy a lottery ticket. Today!"
No joke waaaayy cheaper than even a junkyard motor.
What a saver. Winner winner 🐔 dinner
The scanner computer used in the video: amzn.to/2H3l6dt Autel MK908 Ultimate Wireless Automotive Scan Tool with ADAS, ECU Coding, Full Bi-Directional Control, ABS Brake Bleed, OE-Level All Systems Diagnosis
He was lucky he found a shop that could diagnose it and fix it, with the minimal repair that will get the truck reliable again.
Eric, you are the best. It is really hard to find someone who is REALLY good at what they do in life. There must be literally thousands of channels on UA-cam
that make videos on "How to work on cars," but out shine them all, because your ability to diagnose problems when you make a video. Anyone can replace
parts, and hope for the best, but your ability to explain the procedure and inner working of a car is uncanny. Your are a real Gem, and I don,t say that lightly.
Your are an honest man with a good heart, and people are lucky to have you work on their car. And no, 99.99% of the people can not do what you do, and even
if they could, they choose not to do, because, they are not HONEST. I know it is hard on your body working as a tech, but you would make an excellent teacher
in a college when you decide to retire, really. I look forward to your next class room on UA-cam.
This post ---> example of what that flash and glitter are for, typical consumer ignorant of everyday shop practices.......
@@themanthemyththelegend1392 Eric is very good but he cant be the only good technician otherwise you won't see three year old vehicles on the road.
Great diag, Eric. Probably saved the customer from a lesser mechanic telling them to scrap it.
Another great video Eric. Thank you for the bonus footage and closure!!
The scanner computer used in the video: amzn.to/2H3l6dt Autel MK908 Ultimate Wireless Automotive Scan Tool with ADAS, ECU Coding, Full Bi-Directional Control, ABS Brake Bleed, OE-Level All Systems Diagnosis
Meemaw taught me when changing valve springs, locks and retainers use compressed air in the cylinder to hold the valve in place, no need to pull the cylinder head to change valve springs.
Richard Foster at the end you can see he did that meemaw taught him well
This video just saved my life…. Shop tried to charge me 14,000 for a new engine in my 6.4l… this was the only issue
the customer have found an excellent and honest mechanic!! lucky! just awesome we need more honest people:)
I like your editing of punching the normal values overlay out of the way, lol.
A few months back, I had a Grand Caravan with a sideways six with the exact same symptoms. I went “old school” and plugged up my old vacuum gauge and the needle looked like a sewing machine. I killed cylinders until I found the dead one. I got lucky, it was up front. By the time the new spring showed up, I was ready for it and popped it on. Badda-boom, badda-bing!
Could of took this guy to the cleaners with this amazing repair.Testament to Eric's integrity !!!
like a rock ... have
Hey, we don't know what he told the guy. Just kidding.
Lucky that Mr Valve never met with Ms Piston and had a party.
Shouldn't that be Mr. Piston? Just a min I will ask Mrs. Allen
When they do, they go on a real bender
very common on those junks too
When they get screwed, you could say that mistakes were made... ;-)
@@steveallen5496 Mr Piston and Mrs Cylinder, Mr Valve and Mrs Valve seat/ guide.
Mr. O: Patience Level=Ultra-Infinity Level/ God Mode.
That firing sequence: 1 - 8 - 4 - 3 - 6 - 5 - 7 - 2 was instilled in my brain by my next door neighbor (GM mechanic) when I was only 12 yrs old., and I haven't forgot it even 54 yrs later. Just one of those number sequences that one must know if you're going to work on vehicles with a V8 that have this firing sequence. :-)
The police around here drive Chargers with Hemi’s. I have replaced several broken valve springs. In fact had to buy a special tool to do it on the chargers.
Eric O., in the know! Always an honest viddy-yo!
CALLED IT!!!
valve train issues are super common on the 5.7L Hemi, particularly on the newer ones
Especially the 4.7L
please define "newer" this is a 15 year old truck......
3rd gen Hemi power!! Maybe Toyota has some extra valve springs, valves and valve seats they can supply RAM with.
Don't get me wrong, I love seeing your brake job videos, but it's awesome to see some nitty gritty engine diagnosis/repair stuff. If you can do it, I can do it (just not as well, Doctor O)
Love his engine diag too... but I enjoy all his videos, just a big engine fan though :D
With his diagnosis skill set he may very well be a good doctor!
Love your videos. Thank you for taking the time to make them and ease some of us backyard mechanics like myself.
Erick O, your an amazing mechanic. Great video.
just had a truck come in the shop and has no compression on cylinder #7, same noise while cranking, same issues as your truck you dealt with. The thing didnt want to stay running and we found when we unplugged the MAP sensor it would run and hold idle but had a solid misfire that would be picked up by our snap on scanner(junk). But thank you !! we tested all the passenger side cylinders and found nothing then found your video and did the drivers back two cylinders and immediately found 5 sitting at 70 psi and 7 was at 0 psi
Another great job Mr. O and I expect one very happy customer able to get more use out of his Ram Hemi!
You are the man. Diagnosis extraordinaire. Customer lucked out; with no dropped valve into piston. Whew!
I enjoy your logical method of troubleshooting, great video Eric....
The 5.7L hemi that went into 2003 and 2004 did have some quality issue mainly related to the valve train. The infamous "hemi tick" was traced back to some push rods being slightly short on length. the "beehive" springs suffered from fatigue an broke.
This engine clearly has the tick. I could hear it.
Those are known for the cam to go flat also
In those cases it was usually a roller lifter failure.
Same problem on my 2003 1500 - replaced ALL the valve springs with the springs from the 6.4 Hemi and haven't had an issue in over 50k miles.
Diagnosing that busted valve spring is so impressive... I have complete faith in your work Mr O.... shame I cant have the same confidence in the back street mechanic.
Why arn't you everywhere, problem solved.....I wish I lived in the USA.
That is one blessed truck owner !!! Thanks for another excellent video and an HONEST repair. A lot of shops, sadly, would have gone deeper just for the $$$$$.
This guy should have his own show on Motor Trend Network. He is a great teacher & very good in front of a camera. Dude can fix anything quickly
I really like how you show the test equipment and the easy solution in a practical problem something that can happen to anyone
Thats an amazing repair, customer got lucky and you sir are the man, the myth and the automotive legend.
Nice diagnostic and repair Eric, congrats! Glad to see Ms. Marie again, even only for few seconds...
Good job ,straight to the point with precise diagnosis no up selling like alot of shops you'll be around for years to come .
Bring that to the dealer and he would have gotten soaked.People are sure lucky to have a top ace mechanic like you Eric.Keep them videos coming alot to be learned from you.
What an excellent case study! I'm impressed you zoned in on a poor compression situation so fast, even before the leakdown study. I was back in the dust, still thinking of spark and fuel.
You are a fabulous mechanic! You diagnose problems with a systematic approach not unlike a surgeon. I wonder what would have happened had he taken it to a dealer. Great video, you are awesome. It must also be nice to call a customer and give them such good news.
I think you're giving surgeons too much credit
every single exercise watched - day by day - appreciation from UK!!
Love your approach to debugging the problems you encounter.
Most people would've taken twice the time to diagnose this because there isn't a fault code for "replace intake valve spring on cylinder 5."
slowride55 Agreed. The Dodge dealer in Greenville, SC once told me that their techs can’t diagnose a vehicle without a code to read. They only go on scanner codes or replace parts specifically requested by the customer. Literally told me to drive it til the light comes on or suggest a part to throw at it trial and error style.
Lol so true, there is so much the computer can detect without more sensors, logic, etc
@@fomoco300k I can see that only because of warranty. Regular diagnosis shouldnt be a problem.
MeVsMe Not sure what warranty has to do with technicians’ ineptitude in diagnosing. Hadn’t really considered it since the last vehicle I had that was under any kind of warranty was in 1995. However, after considering your proposed excuse, I’m pretty sure that whether a vehicle is under warranty or not has nothing to do with the techs’ knowledge or training level. And, since the instance in question was a 2003 Ram with somewhere between 160-170k in 2015, that would make that 12 year old vehicle ineligible for a warranty but very feasibly diagnosed. In fact, I was able to do it in my driveway with a cheap Actron fuel pressure gauge and an ignition key and my brain- no multi-thousand dollar high tech equipment needed. Which brings me back to my point; Eric did a great job of using his noggin instead of a crutch.
slowride55 I had one break last year on my 70 Z28 the day after doing a few 6,000 + rpm shifts. Even though they all only had about 8,000 miles on them, I replaced them all. Now I have 15 spares and hope I don't ever need them. These were Lunati brand BTW.
Back from death's door! Now it'll be New York rust's turn to take a whack! As usual, excellent work.
You are so incredibly knowledgeable and personable in these videos. I normally don't comment but I feel like i have to let you know how much I appreciate your videos. Keep it up south main!
You earned your pay today great job Eric, been watching for a number of years now, you are simply the best
Man, if only you or ScannerDanner were out on the west coast teaching, i think i'd be interested in a career change. Great diag and fix.
Right there with you on this one..
I wish his shop was in my town, I have a good mechanic shop in town but most of their work is mechanical, little electrical. Eric seems to be the 'jack of all trades'.
n8pu the fact that Eric knows what voltages and readings certain sensors should be off the top of his head shows how good a tech he really is. As an apprentice I really aspire to be that good.
@@vader2774 right. As a diy repair guy i fix my friends and my moms car and eric has helped me alot with the knowledge he has bestowed to me.
Scannerdanner is boring
Great use of the pressure transducer. I have found that the shape of the waveform from it as well as the max and min values can give valid diagnostic information. The rate of change of pressure on the up and down slopes can say a lot. Storing the profile for all cylinders and comparing them can point to issues more than a simple compression test can. The rate of filling and emptying of the cylinders is very useful data.
I’ve been an automotive, heavy equipment, aircraft, electromechanical and electronics technician for the past 40 years and I can’t help but be impressed with your knowledge of vehicle systems and your good process of troubleshooting. Your analytical skills are the best I’ve seen on the internet. Younger mechanics could really learn from watching how you approach problems.
I bought a new 2004 hemi pickup and in ‘06 went on a 5000 mile retirement sojourn around the US. I drove that vehicle in a spirited but conservative manner, well cared for, and near Pierre, South Dakota the #3 intake valve spring broke! Had it fixed under warranty with no problem. When I got home to Tucson I brought my “baby “ to the dealership for routine service and told the service writer that I had a broken valve spring on the sojourn, and he said “it was # 3 intake, wasn’t it?” Apparently not an uncommon occurrence, I figure!
great! thanks for the bonus footage! it lives to die another day.
Great work Eric-O. Love seeing the pico and wps stuff. Keep it up
Quite simply this channel is one of the best. Great video.
knowledge, excellent fault finding skills, and use of test equipment to validate. Picked one component out of any number of possibilities without shooting parts at it. A pleasure to watch.
Made my day! Been "jonesen" for an SMA vid.
When i worked for a dealership we had a ton of these back in the early 2000's . Elgin Made the springs for those and had a hoard of bad ones that were tempered incorrectly . Then chrysler changed spring manuf. shortly thereafter .This brings back memories lol.Great video
Exactly what I suspected. Purchasing dept. at the factory was swayed by the lowest bidder. In the purchasers defense, the management incentivizes and grades their purchasers on cost reduction. So you end up with a supplier that has/had no concept of process control. When in doubt, ship it! This is a systemic problem in American manufacturing, which is why I just bought a 1999 Toyota Camry with 266K miles. The kicker is that I benefit directly from this mentality. My father-in-law, retired at 55, gets a $2k per month pension which allows him to live independent of our help. He now suffers from dementia, probably from sucking too many paint fumes in the 70s and 80s.
I like the on screen overlays of useful information. Particularly when you overlay the relevant wiring diagram when diagnosing a circuit - certainly helps this dummy follow along :)
Nice diagnosis. Right to the point. You made that owner a very happy guy. Gotta love a happy ending!
Great Testing! Quick and clean!
Good way for us to start the day, bad for customer.
Not really... Tht customer got really lucky that valve didn't get impacted.
@@TheRonin508 you're right. I saw AFTER I put in the comment there was more, or as Paul Harvey used to say, "The rest of the story." For sure one valve spring was a lot better than valve and piston damage! The Pico proved it's worth!
Keep it up Eric your gonna be a great mechanic one day 😂
Man... You are good. Years of experience. It shows..
This is an excellent video. I very much appreciate that you slow down and take the time to explain things.
Yep, my 2004 ram hemi broke the identical valve spring at about 200k. Finally got rid of it at 302k. Heck of a truck.
@Don Quixote I have a 05 also . fingers crossed . Ive had it for around 4 yrs . 150 k on motor .
It was only about a $350 repair at the dealer. Not bad. Eric O likely better price and way better quality.
@@mikenonameneeded3485 Did the issue stop at the '05 year? I see a lot of commenters here only mentioning '03-'04 model year Hemis having this issue. My '05 has over 200k now and doesn't seem to have a single problem.
I dont know.
The cam shaft has been flat spotted. The roller lifters go bad and lose the needles in the bearings then the lifter wipes out the cam. Becoming a very common issue with the 5.7 l Hemi engine.
There's been many videos in recent weeks highlighting exactly what you're describing. Scary.
Is this true on the Pentastar 3.6L too?
@@5jjt I hope not. It's in my Jeep! I think some 2012s had some lifter noise issues.
@@5jjt Buddy, the 3.6 is an entirely different engine. Its a DOHC engine not a OHV pushrod engine. How can you be watching his videos and not know this????
@@jeffissimo1221 i just did lifters and new cam in my 2012 grand Cherokee a few weeks ago. Those melling hydraulic lifters are failing at a ridiculous rate. Only have 105k on the clock too.
It's great to have the electronic testing equipment, you also need to know how to use it and understand it. The bleed down test has been around for many years. Great tool .
Great job for finding the actual problem
That was pretty awesome, Mr. O. And one lucky customer! Bet he was relieved!
Got lucky with just a broken spring, my brother's ram had to get the cam replaced.
I was at the dealer the otherday dealing my a defect on my Ram, and was talking with the service manager about interesting problems. He was telling me that they had a influx of bad heads on the 5.2 and 5.67 hemi's cause they where being built so cheap. The problem the exhibited was misfire at idle. The verdit that was causing this turned out to be cracked valve seats, in close proximity to the cooling passages. Which would cause weeping of coolant that would leak across the plug at idle.
a 5.2 hemi?? a 5.67 hemi?
The 5.2 was a 318 cubic inch, and not a hemi. Not sure how you come up with a 5.67 hemi ?
@@bertgrau9246 typo that I didn't catch. I am dyslexic too, so things often get flipped unintentionally.
Another job well done, keep up the informative videos, I have a 07 Ram with the 5.7l hemi and reference your videos whenever a problem arises, Awesome job 👍
I appreciate the help bro! You have helped me an my grandpa fix a couple issues with a 07 Dodge project truck we are working on.
SMA for the win!
I wish I could find a mechanic like you out in my parts. Im tempted to drive out to you for some fixings.
That 1 Lucky Customer! My mouth is a drooling over some of your tools ,and You're shop. Been working in a sand bed since I was 12. Just turned 57. HAHa ,, Have a Great 2021!
That's one of the good things about a pushrod engine: These kind of repairs are much easier than on a OHC or DOHC engine.
Good video, good fix.
Ever tried just bumping the starter with your finger over the spark plug adapter to feel for highest pressure on your finger for top dead center.
Gregory Birulkin That’s old school, plus he wouldn’t get to use his expensive diagnostic equipment lol
You would have to have big fat and long fingers to get to the holes
What a job, bet the customer was super pleased, from possible junk to good.
How long did it take to swap the valve after the initial diagnosis.
Again fantastic skills, job and customer service, not to mention fantastic video.
Cheers Eric.
Glad I came across your video. My wife's 12 Durango had the exact same problem. 2 hours and a $2.50 part it runs great again. Thank you for your great channel.
Great video Eric! Hope all is well with you, family and the shop. Been busy recently and have missed a lot of videos. Enjoying the notifications of the great videos waiting to be watched :)
NOW THAT WAS A GOOD VIDEO SIR THANK YOU !
Yeah. Great video!! You used compressed air in the spark plug hole to keep the intake valve up while changing the spring, right? My buddy Tim showed me that trick on a Hemi about 2 years ago. I thought he was a genius and he said that every mechanic on the planet knew that trick. 😂😂
Thanks so much for the outstanding videos. You are such a good teacher. You may not believe it, but your videos need to be part of a master class. You’re that good!!
Thanks again!!
Yeah they taught that compressed-air trick in automotives class in high school back in the 60's.
If your compressed air supply is less than the time needed, there is an alternative trick. Lower the piston a bit, feed a piece of thin rope through the plug hole and raise the piston against the wad of rope. Valve is held in place while spring is replaced. When repair is complete, lower piston and pull out the rope. Hopefully, you use a long enough rope that there is plenty on the outside of the engine.
@@JW...-oj5iw This is exactly what I would do "in the field" when compressed air wasn't available. Pretty old school trick. Always tie off the other end of the rope so you don't lose it inside the cylinder.
I have used the rope in the cylinder for over 60 years on aircraft engines. The guy that taught me learned it in 1920. Some things never go out of style.
AKJeeper yep if the valve drops while using compressed air your pretty much stuck with pulling the head
Thanks for the video. Entertaining and informative as always. Now to re-watch 120 of your brake videos tonight before I change the front pads on my car tomorrow. Coz I remember. You can do, so can I.
Nice job. That Pico really makes life a little easier, I must get one. thanks again..
Our 04 Dodge did the same thing at only 80 thousand miles and since I've probably fixed 4 or 5 more for other folks. I'm pretty sure it was a bad batch of valve springs or something.
@Rusty Highlander Dodge nuff said.
Defective roller lifters that loose the needle bearings and flat spot the cam
Well documented
Bonus footage is the best!
You are the best mechanic I have ever seen . You should move to Oregon where there is no rust . We need someone like you here .
Great job AGAIN Mr. O! I have to say any time I see that K&N logo under the hood of a used car I just keep walkin.
One Time Use Variable Valve Train System! Nice!
Sounds like this is a somewhat common failure. Did the customer elect to only replace the one spring?
Nice Chrysler design...always focus on valves springs
Always throw shade on mopar horror of horrors a valve spring broke on a 15 year old Dodge truck with 140k miles and now it runs like new with a fairly minor minor spring repair.
Super lucky that it didn't touch the valve or piston face or guide. The diagnosis was legit. I liked how you test the theory before hand. Nicely done. Keep up the awesome content Mr. O.
I love watching this channel and learning. I'm not a mechanic but do all the PM on my vehicles. Some may say watching stuff like this is like watching paint dry. Maybe so, but I think it's fascinating.
The same with me. I'm not a mechanic, but I do perform almost 100% of all the maintenance on our business and personal vehicles. I am amazed at this guy and his channel.
One of those kick my ass whit the same issue. Couple years ago😅
Junk a hemi with a fancy cold air intake? No way. Crank it Marie.
Awesome video I never had that type repair to do before so learn from one of the best.....thanks Eric!!!
So impressed with your diagnostic skills
Dude got lucky with that one.
ITS A DODGE -------A PIECE OF SHIT
LIKE FORD
BREAKS DOWN ALL THE TIME
@@ekop1778 all the big 3 have a few stinkers. Dodge wasn't as bad as it is now but it's by no means any worse than any other manufacturer.
LMFAO Kender and Natalie that's hilarious.
Stuck Inside of Mobile Yeah, with the much lower rent Spectre filter on the intake tube. Or maybe the whole rig was Spectre but with a Kendra & Natalie sticker on it.
Eric, you do know your craft. Saved customer big time.
You're one helluva mechanic, I wish you lived near my hometown, youd stay busy for sure. Thanks for being an honest and AWESOME guy. God Bless. You and your family have a safe holiday weekend. Cheers from Arkansas.
pretty clean under the valve cover for that mileage, must be a good maintenance routine.
Lol was view number one. The office is quiet before the long weekend.
You and 5,000 other people. You really think you were first? Lol
@@christopherrabaldo3377 Wasn't the first comment. Loaded the video it said 1 view.
@@christopherrabaldo3377 Someone always is first.
Wow talk about one lucky customer eh. Awesome video. Thank you for your channel. Its fun to watch a really smart technician. I always learn from watching your videos.
Good fix Eric O. I bet the customer was happy with that fix too! Not a whole engine overhaul. Kool.