1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Has My Timing "jumped"?

Discussion in 'Early CJ5 and CJ6 Tech' started by LayemStr8, Apr 17, 2024.

  1. Apr 17, 2024
    LayemStr8

    LayemStr8 New Member

    Yakima, WA.
    Joined:
    Feb 14, 2016
    Messages:
    24
    Timing has been set at 12 degrees forever, but now I'm reading it at 6 degrees and that's with the dist. as far to the left as she goes, which used to be 12 degrees! HEI also.
     
    Dwins1 likes this.
  2. Apr 17, 2024
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,887
    Is the advance/retard mechanism working? Is there a vacuum connection that needs to be checked? (Does the timing change with rpm and/or load?)


    But I don't know doodly about HEI, except I don't trust electronic stuff.
     
    Rick Whitson and Dwins1 like this.
  3. Apr 17, 2024
    Rozcoking23

    Rozcoking23 RUN & GET BIT! 2024 Sponsor

    Stockton, CA
    Joined:
    Mar 29, 2008
    Messages:
    884
    How’s it running?…could the timing chain of jumped a tooth.
     
    Dwins1 likes this.
  4. Apr 17, 2024
    LayemStr8

    LayemStr8 New Member

    Yakima, WA.
    Joined:
    Feb 14, 2016
    Messages:
    24
    I've replaced the coil, cap, ICM, and vac. adv.
    It does make a pop outta the exhaust while idling when it's first started up.
     
    Dwins1 likes this.
  5. Apr 19, 2024
    LayemStr8

    LayemStr8 New Member

    Yakima, WA.
    Joined:
    Feb 14, 2016
    Messages:
    24
    Please inform this ole dimentia ridden s.o.b. on what I need to do first guys.
    I do kindly thank you!
     
    Last edited: Apr 19, 2024
    Dwins1 likes this.
  6. Apr 19, 2024
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,887


     
    Dwins1 likes this.
  7. Apr 19, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
    Joined:
    Feb 8, 2021
    Messages:
    1,716
    "I've replaced the coil, cap, ICM, and vac. adv.
    It does make a pop outta the exhaust while idling when it's first started up."

    You don't say, but I am assuming this is a V6 engine. You did say you replaced the cap. Check to make sure your spark plug wires are in the correct firing order.

    I had a brother-in-law who installed a new cap and spark plug wires on his V6 and had two on the wrong terminals. He ran it that way long enough to burn off part of the top of a piston, so they will still run when wired wrong, albeit not so well.
     
    Dwins1 likes this.
  8. Apr 19, 2024
    LayemStr8

    LayemStr8 New Member

    Yakima, WA.
    Joined:
    Feb 14, 2016
    Messages:
    24
    Did you read the initial post as well as
    the signature?
     
  9. Apr 19, 2024
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,887
    Many people here have several Jeep vehicles with various engines.
     
    dnb71R2, vtxtasy and Dwins1 like this.
  10. Apr 20, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
    Joined:
    Feb 8, 2021
    Messages:
    1,716
    "Did you read the initial post as well as
    the signature?"

    Yes I did, but the original post doesn't say much about what it is, other than the clue about HEI. The signature doesn't mean a thing because I have no idea whether that is the Jeep you are asking about.

    It is fine with me if you don't appreciate my attempt to help. You won't have to worry about that going forward.
     
    fyrmn and dnb71R2 like this.
  11. Apr 22, 2024
    LayemStr8

    LayemStr8 New Member

    Yakima, WA.
    Joined:
    Feb 14, 2016
    Messages:
    24
    Wow, some people's kids anyway. :sleep:
     
  12. Apr 22, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
    Joined:
    Feb 8, 2021
    Messages:
    1,716
    Now that is something to ponder.
     
    Lilbuff63 likes this.
  13. Apr 22, 2024
    Cj5dale

    Cj5dale Member 2023 Sponsor 2022 Sponsor

    Knoxville, Tn
    Joined:
    Aug 19, 2021
    Messages:
    584
    ?
     
  14. Apr 22, 2024
    homersdog

    homersdog Tulsa, Ok 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Tulsa, OK
    Joined:
    Jan 8, 2012
    Messages:
    2,397
    Getting back to the original problem, no one can tell you a magic answer.

    Verify all your wiring. If it looks good then...

    Pull off the timing chain cover, distributor, water pump, and look at the timing chain. They do wear out. They also have tensionors which wear out and break. Maybe the distributor gear is broken.

    Or take the valve cover off and check the distributor position at TDC. It is going to take some work to resolve this.
     
    LayemStr8 and ITLKSEZ like this.
  15. Apr 22, 2024
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,887
    That kind of assumes the correct answer was in the question. It's a lot of work when other basics haven't been verified.

    We have yet to hear from the OP if the advance/retard function is operating, for instance. Or, maybe the fault is in the timing light or meter being used, or how it is being used..
     
  16. Apr 22, 2024
    Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    East Tennessee
    Joined:
    Feb 8, 2021
    Messages:
    1,716
    The "ole dimentia ridden s.o.b." (his words not mine) may have clamped the timing light lead onto the wrong spark plug wire. Who knows? He hasn't really responded to anyone's suggestions with anything worthwhile, and hasn't provided much in the way of useful information.
     
    Fireball and dnb71R2 like this.
  17. Apr 22, 2024
    ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    Spokane Valley, WA
    Joined:
    Aug 13, 2015
    Messages:
    6,704
    OP is wanting a yes or no answer. So, yes.

    If I’m wrong, you’ll find out upon disassembly as you find out what really happened.



    We’re not being jerks; it’s just what we’d do if we had this issue on our own rig. We’d start diagnosing it. There are only so many things we can suggest from here, and it sounds like you’re not willing or able to give any of them a try until we just give you the answer you want to hear. Insulting our member base isn’t going to help matters.
     
    LayemStr8, Fireball and dnb71R2 like this.
  18. Apr 23, 2024
    homersdog

    homersdog Tulsa, Ok 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Tulsa, OK
    Joined:
    Jan 8, 2012
    Messages:
    2,397
    NO! it gets him off his a** to work on the effing vehicle instead of b*tching at us!
     
    dnb71R2 likes this.
  19. Apr 23, 2024
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,887
    I had the same thought.
     
  20. Apr 23, 2024
    homersdog

    homersdog Tulsa, Ok 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Tulsa, OK
    Joined:
    Jan 8, 2012
    Messages:
    2,397
    Sorry about my comment above, Pete. I didn't mean to be rude.
     
New Posts