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Come along with Eric O. at the SMA shop as we have a look at this 2001 Chevrolet 1500 5.3 that came in with a lean misfire. The engine light is on with codes P0300, P0174 and P0171. Ends up not being your average intake manifold gasket leak.
Chevy Truck Intake Leak Diagnosis: https://www.youtube.com/watch?v=mmQloi0nipo
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50 thoughts on “Chevrolet / gmc – rough running, lean, misfire”
  1. Avataaar/Circle Created with python_avatars Mark Martin says:

    Great video. I have the desire to rent a smoke tester for my 2003 Dodge Ram 1500 now after this video. Trying to fix everything lacking on my truck since gas is 5 bucks a gallon. (Our politicians all need to be offered a blindfold and a cigarette….)

  2. Avataaar/Circle Created with python_avatars K Den 1 says:

    I have that same light its awesome

  3. Avataaar/Circle Created with python_avatars Jaylen my jj says:

    Will my brake booster being bad on my truck cause it two have a p0300 code random misfire

  4. Avataaar/Circle Created with python_avatars Jim Gordon says:

    Another excellent explanation. Not to mention detective work. Thanks.

  5. Avataaar/Circle Created with python_avatars russell knauer says:

    Were do you get the smoker

  6. Avataaar/Circle Created with python_avatars R. A. says:

    Would be great if mine had an egr valve to blame

  7. Avataaar/Circle Created with python_avatars Ugomakediciples says:

    Thanks needed this one! Now to find the EGR Valve!

  8. Avataaar/Circle Created with python_avatars Jorge Perez de Prado says:

    Nice vid, I'm working on my 5.3 and it does that rough idle shit in the morning but only on cold days. Changing the intake gaskets this weekend.

  9. Avataaar/Circle Created with python_avatars DUHHH must be Trumps fault says:

    Drive the kid to my parents doing 70, got back on highway to go to work, sounded rough with slight loss of power, rough at 60, then 50, then 40, then 15.

    Limped to work, truck starts, barely stays alive, put it in drive and lurched forward 15 feet and it could barely do that

    All of this happened in a matter of 7 miles of driving

  10. Avataaar/Circle Created with python_avatars Dennis Berg says:

    What kind of fog machine do you use?

  11. Avataaar/Circle Created with python_avatars A Tre says:

    Trick my grandmother showed me! 🤣🤣🤣 great video. Incredible the amount of knowle needed to work on modern vehicles!

  12. Avataaar/Circle Created with python_avatars Canyon.County208 says:

    I can't get my truck to start. I was driving it and it just lost power and shut off, and then since then it will crank but won't fire up. I've changed the fuel filter and pump. And today the spark plugs cuz they were bad. but also the spark plugs were like covered in gas and then when I put the new ones it fired up once and now won't again. Any thoughts on what might be wrong? I've been trying to get it running since Dec 23rd because it's my daily driver, and just have been having no luck

  13. Avataaar/Circle Created with python_avatars doingforme says:

    Awesome videos friend, thanks for doing these . It really helps a poor fella save ..

  14. Avataaar/Circle Created with python_avatars AReal handyman says:

    how would i find a mechanic that goes into detail like you i do alot of my own work well im a parts changer and ive been chasing a maf code for a year now and im ready to find a mechanic but i want to be sure i get a true diagnostics

  15. Avataaar/Circle Created with python_avatars buyandsellindianacom says:

    Smart diagn.,!

  16. Avataaar/Circle Created with python_avatars tom mello says:

    05 tahoe leaking at PVC

  17. Avataaar/Circle Created with python_avatars Tom says:

    Where do you get one of them smoke machines that's cool

  18. Avataaar/Circle Created with python_avatars Bailey Rhuems says:

    What smoke machine did he use?

  19. Avataaar/Circle Created with python_avatars Dan M says:

    Still have a P0300 on a 97 after (Vortec 5.7L & 4L80E): New crank sensor w/relearn, new o2's. Does not run rough or stumble (only misses between 15-2500 cruise & coast. What would your guess be?

  20. Avataaar/Circle Created with python_avatars twwtb says:

    If you can do it, I can do it!

  21. Avataaar/Circle Created with python_avatars The lazyhandyman says:

    Great diagnostic skills. Good catch on the EGR pipe!

  22. Avataaar/Circle Created with python_avatars John E. Carr says:

    Another great video.

  23. Avataaar/Circle Created with python_avatars James Johnson says:

    I got a 98 Chevy z71 it has a problem not shifting into over drive and when u get down on it it falls flat in its face like it's starting out in thrid gear what do u think it could be possiblely any help would be appreciated replaced the throttle position sencer did alright for a bit then the problem came back

  24. Avataaar/Circle Created with python_avatars bigcartoonyIIV says:

    what if the check engine light isnt on?

  25. Avataaar/Circle Created with python_avatars Jim Toohey says:

    Wish you were in my town need to find a chevy pro. As much hassle as they can be they build a lasting truck that doesnt suck gas if dialed in… Ya see alot of them with 250k plus with og motor trans

  26. Avataaar/Circle Created with python_avatars Crazy Luch1 says:

    🤣😝EVVVEEERRRREEEELIGHTINDADASHIZOOOOOWWWNNNN BUT DONT SKRAP A CHEVY!!!💯✔🐇👊💛

  27. Avataaar/Circle Created with python_avatars Dennis Hanks says:

    I have a 96 chevrolet silverado 5.7. I'm getting gas only on the drivers side. unplugged the cap on the spyder injector and waited a few then plugged it back in still no gas on the plugs on the passenger side. I even disconnected battery. Got any ideals

  28. Avataaar/Circle Created with python_avatars Anthony Cooper says:

    Where did he plug in the smoker at? Which line?

  29. Avataaar/Circle Created with python_avatars Bradly Lagace says:

    I have the same truck and I need you to work on ittt lol

  30. Avataaar/Circle Created with python_avatars Encapsulatedcrapforbrainsbi*ch says:

    You sir.. are the man

  31. Avataaar/Circle Created with python_avatars Smudgy Content says:

    I have the code P0440 and says bank 1 Lean, now when I replaced the Crank sensor I replaced the intake gaskets with them nice solid metal ones 😒…

  32. Avataaar/Circle Created with python_avatars Stan Mazzarese says:

    Very helpful thank u

  33. Avataaar/Circle Created with python_avatars MountainManTV says:

    What would cause this same problem on a 03 Silverado 1500 4×4 mine don’t have the Egr there

  34. Avataaar/Circle Created with python_avatars Brian S says:

    Hello Eric ! I have a 94 gmc 5.7 . I have a bucking problem at a light throttle , certain position the engine wants to start bucking . It is a 5 speed manual trans . Ive changed the tps ,map ignition like dist , pickup coil , module , and the main coil . But still has this certain throttle position at light throttle it wants to buck . Im at a loss . Did the head gaskets , valve seals , and intake of course . But thats not why i did the top end . I had a little white smoke situation . The bucking prob was there before I did the top end . Any suggestions would be GREAT !!!!!

  35. Avataaar/Circle Created with python_avatars Mark RMG Liberia says:

    where do I find a mechanic like you ? someone that actually knows how to work on a GMC engine

  36. Avataaar/Circle Created with python_avatars justice incognito says:

    Blah blah blah. Get to it already!!!

  37. Avataaar/Circle Created with python_avatars Archangel0804 says:

    Damn…113000 miles and already rusted out and having driveability problems. I've had plenty of Chevys…two right now and never had one that bad

  38. Avataaar/Circle Created with python_avatars twincam825 says:

    Thanks for posting all theses videos.

  39. Avataaar/Circle Created with python_avatars FuSIoN Density says:

    Neither one of my 2002 silverado's have an EGR tube. They never came with it

  40. Avataaar/Circle Created with python_avatars john swan says:

    Im getting bad sputtering without any check engine light and no codes…. after I drove for about 30 minutes, let sit overnight started it and no sputtering but smells lean….? Its on a 2001 2500 4×4 8.1L chevy Suburban ….. any suggestions? Thanks, your the best technician on YouTube…. love your channel, you've helped me in several successful repairs…. thanks I really appreciate your knowledge

  41. Avataaar/Circle Created with python_avatars Kevin david says:

    Got a 99 5.7 p03000 p03006. Only after I hit 51mph. Replaced plugs wires cap rotor. Stft on bank 2 it -6.1 roughly. Any help would be great. Even while misfiring no drivability issues.

  42. Avataaar/Circle Created with python_avatars Pete Bovenzi says:

    This man is ingenious

  43. Avataaar/Circle Created with python_avatars Video-gamer-for-life says:

    you wont happen to remember what bolts you need for the EGR hose or have a part number?

  44. Avataaar/Circle Created with python_avatars justice incognito says:

    Why do you talk like a litle bitch?

  45. Avataaar/Circle Created with python_avatars Min Lorenzo Elliott says:

    Awesome! Been having the same troubling with my 2009 Avalanche. Think problem is solved 🙂

  46. Avataaar/Circle Created with python_avatars Carl Kraus says:

    I would have liked to see you get that part off the exhaust manifold.

  47. Avataaar/Circle Created with python_avatars Mike McFadden says:

    1 Now, brothers and sisters, I want to remind you of the gospel I preached to you, which you received and on which you have taken your stand. 2By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain. 3For what I received I passed on to you as of first importance: that Christ died for our sins according to the Scriptures, 4that he was buried, that he was raised on the third day according to the Scriptures 1 Corinthians 15:1-4

    9 If you declare with your mouth, "Jesus is LORD," and believe in your heart that God raised him from the dead, you will be saved. 10 For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved. Romans 10:9-10

    We're living in the end times. Jesus will be rapturing his church before the 7 years of Tribulation begins. He will come back after the 7 years. If you miss the rapture don't take the mark of the beast, you can't go to heaven if you do. It will be on your right hand or your head. God bless you.

  48. Avataaar/Circle Created with python_avatars Creedux says:

    Just replaced my EGR valve and tube assembly this morning and resolved my issues. Funny thing is is that your video popped up in my video feed after i did the repair haha.

  49. Avataaar/Circle Created with python_avatars Brandon Smith says:

    Man I want this dude working on my chevy

  50. Avataaar/Circle Created with python_avatars Greg Sullivan says:

    As I watch your videos, I like to try and guess what the problem is before you figure it out. My batting average is not too good. I've been keeping my own cars running since I got my driver's license in 1969. I currently have four GM cars ('96 Impala SS, '03 Corvette, '88 Corvette, '88 Trans AM). As you can guess, they keep me busy!

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