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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50 thoughts on “5.7 hemi ram – bad misfire will not idle”
  1. Avataaar/Circle Created with python_avatars Friedrich Von Eichel says:

    How the heck did you disable the fuel pump?

  2. Avataaar/Circle Created with python_avatars rabie4x4 says:

    I have a very similar vehicle. This video made me smile.

  3. Avataaar/Circle Created with python_avatars SRTJAY says:

    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

  4. Avataaar/Circle Created with python_avatars Joseph Monterio says:

    I have an 07 Grand cherokee with the 5.7 hemi as well. I replaced the cylinder head gasket and valve cover gaskets. Since putting everything back together, it is misfiring with code p0300 and I hear a nice little tick sounds. All spark plugs were properly gapped at .044. What could be the issue?

  5. Avataaar/Circle Created with python_avatars Monterio Ford says:

    So what the next step

  6. Avataaar/Circle Created with python_avatars malamri424 says:

    Just had an intake valve spring break on a '15 GC SRT. Changing the whole set now.

  7. Avataaar/Circle Created with python_avatars Hola! Caleb Livaudais says:

    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.

  8. Avataaar/Circle Created with python_avatars Agostino DiBella says:

    Lucky for the customer that the repair wasn’t too costly!

  9. Avataaar/Circle Created with python_avatars drtb69 says:

    Back when the camshafts didn't melt down!

  10. Avataaar/Circle Created with python_avatars fmerv2 says:

    could have tested it with a vacuum gage much faster if the gage would have jumped all over the place it would have told you it was a valve problem

  11. Avataaar/Circle Created with python_avatars brandon jones says:

    I have a 2010 doing the same but I have 150 to 160 compression in all cylinders no broken spring or bent push rods I don’t know

  12. Avataaar/Circle Created with python_avatars Ray Medorio says:

    Hey
    How are you?
    I just rebuild my engine on my 04 dodge durango
    I didn't change anything on valves and springs
    Just pistons, pistons rings, main and rod bearings
    When I crank it the first time it was running ok
    Then I turn it off
    Few minutes later I turn it on and begin running like that one on your video
    The check engine light come on showing bank 1 sensor to rich I put a new one, I crank it again and keep running really bad keep showing bank 1 sensor
    What you think it can be?

    And took off the oil cap there is a good bit of Condensation why?
    Thanks!

  13. Avataaar/Circle Created with python_avatars Hola! Badcom says:

    Ok I have a 2004 dodge 1500 5.7, it too runs like crap, sounds similar to back fires but no codes. The cam shaft sensor coded so replaced, replaced the timing chain. Now codes ignition coils a through c. Runs rough, idles rough, and. White smoke out the exhaust. I put this on your channel because I have seen alot of your videos in the help with other cars. You are thorough, and dam good at your job so, anybody have thoughts.
    I have a video of it running, though the breather is off you can hear the air in the throttle body. The video is on my channel.

  14. Avataaar/Circle Created with python_avatars 100ega says:

    I have a 2004 ram 1500 5.7 exactly with the same symptoms the cranking sound, cannot idle, very rich condition, so, do you think it's related the low cylinder compression with the rich condition???

  15. Avataaar/Circle Created with python_avatars Roy Dedman says:

    I have problem with p0052

  16. Avataaar/Circle Created with python_avatars dwoodog says:

    Just bought me a hemi dodge ram. 2009 and everything is outta warranty. Got me a whole lotta youtube, a haynes manual and just enough knowledge to be dangerous!!

  17. Avataaar/Circle Created with python_avatars michael depow says:

    I'm going to have to take a ride up from jersey with my Hemi

  18. Avataaar/Circle Created with python_avatars James Anderson says:

    So my trucks doing the same thing with the truck lag to start but it stays running after it finally starts can you help me

  19. Avataaar/Circle Created with python_avatars Comfort Zone says:

    Great video. Why would one bad cylinder out of 8 make the engine run so bad though?

  20. Avataaar/Circle Created with python_avatars JEEP Wk6.5L says:

    That idle sounds identical to mine. Target idle is 840 and IF it idle it’s a ruff 400 ish. I have no throttle response until I’m 40% iac. Vacuum is super low on my AEM boost gauge. (-8 to 0) but clears up if u hold over 2000rpm but has a random backfire. This isn’t a factory engine but it is a base 5.7. Guess I need to do some digging.

  21. Avataaar/Circle Created with python_avatars Gary Drumm says:

    Eric
    The Bible says to let your yes be yes, and you no be no, and that everything else is vanity.
    I’ve been learning the meaning of this for years, so I thought I would share it with you. You have an awesome talent and work ethic, and I enjoy your videos immensely. I just hope that you will take this small criticism with a grain at salt, and keep up the excellent wor.
    Love your family and your beautiful puppies too.
    Sincerely, Gary Drumm

  22. Avataaar/Circle Created with python_avatars Joseph Neal says:

    It's a new EGR valve it's aftermarket so it's more than likely junk…… Lmfao 😂. Man Eric you kill me!!!!!

  23. Avataaar/Circle Created with python_avatars Jim F says:

    How many hours to diagnose? How many to repair?

  24. Avataaar/Circle Created with python_avatars zr1sparky1 says:

    Everybody loves a happy ending

  25. Avataaar/Circle Created with python_avatars R Fluck says:

    Having the same issue on my 05. Has 70k miles. How would I be able to go about determining which valve cover to pull I just know it has a p0300 code

  26. Avataaar/Circle Created with python_avatars Hemi Madman67 says:

    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 👍

  27. Avataaar/Circle Created with python_avatars forty two says:

    When told that a politician was a humble man, Churchill replied. "Yes, he has much to be humble about!"
    This mechanic has just enough humility to show he's an expert.

  28. Avataaar/Circle Created with python_avatars Robert Prelewitz says:

    Too say we can do it to is a waste of good air. Very few people can remember everything you do, an then make a movie 🎥 of it. I don't know a one. Thank you

  29. Avataaar/Circle Created with python_avatars Ty Carpenter says:

    I wish your shop was here in Washington State!!

  30. Avataaar/Circle Created with python_avatars Mike Thompson says:

    I just watched a video of that exact pickup with a broken #3 piston… It's the K&N filters, they cause hot rodding…. busts stuff…. ha ha

  31. Avataaar/Circle Created with python_avatars Jorge Lopez says:

    Eric, you do know your craft. Saved customer big time.

  32. Avataaar/Circle Created with python_avatars John Smith says:

    Misfire and no idle…. thats how a dodge runs when new on the dealer lot.

  33. Avataaar/Circle Created with python_avatars Josh Crocker says:

    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.

  34. Avataaar/Circle Created with python_avatars Andy Citarella says:

    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

  35. Avataaar/Circle Created with python_avatars Dan Perkins says:

    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.

  36. Avataaar/Circle Created with python_avatars norb pre says:

    YOU ROTATED IT, DID YOU HAVE AIR COME OUT THE EXHAUST? CUASE I WONDERED ABOUT THE AIR TOOL,, , WHY NOT DO A BASIC COMPRESSION CHECK ON THE CYLINDER. AND I WONDER HOW YOU KEPT THE VALVE UP WHILE USING THAT SPRING TOOL TO REPLACE THAT BROKEN SPRING.IF IT WAS STUCK OPEN,, BOTTOM LINE SOUNDS GOOD, LOL

  37. Avataaar/Circle Created with python_avatars Speed Ineed says:

    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!

  38. Avataaar/Circle Created with python_avatars Steven Gullison says:

    Good afternoon, thank you for the information. Because I have to of them 5.7 thank you for sharing

  39. Avataaar/Circle Created with python_avatars Galen Lewis says:

    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.

  40. Avataaar/Circle Created with python_avatars tomdickharryjane says:

    What is the tool used to replace the valve spring without pulling the head off?

  41. Avataaar/Circle Created with python_avatars Shane Harrison says:

    Talk about a lucky skunk did the stinckies go away

  42. Avataaar/Circle Created with python_avatars Jimssawsnstuff says:

    The Doctor is in the house! That’s some pretty sophistomicated do-wacky stuff for that diagnostics! Mr O! Nice job😎👍

  43. Avataaar/Circle Created with python_avatars etyrnal says:

    how does one actually find a KNOWLEDGEABLE local mechanic? Somebody who actually diagnoses and doesn't just baptize the car with parts?

  44. Avataaar/Circle Created with python_avatars etyrnal says:

    i'm afraid to take my hemi in to get it looked at

  45. Avataaar/Circle Created with python_avatars Michael Knorr says:

    Iac issue.

  46. Avataaar/Circle Created with python_avatars j1m1mac says:

    Looks like the owner, finished this truck off 12 months after this video. I bet he used all the horses that Hemi has to offer.

  47. Avataaar/Circle Created with python_avatars Tito B says:

    So what ended up being the issue?

  48. Avataaar/Circle Created with python_avatars armando nika says:

    Holy!!!!

  49. Avataaar/Circle Created with python_avatars 1337penguinman says:

    I'm pretty sure this is the same truck that ends up with a broken piston about a year later.

  50. Avataaar/Circle Created with python_avatars jorden suberla says:

    I have a 04 ram 1500 5.7 n i have a check engine light on and the only code is p2323 coil h. I replaced all 8 coils n im doing plugs n wires next week but it idles rough at lights n smells of gas?

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