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Thread: Misfire Cyl. 1

  1. #1
    Twilliamson's Avatar
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    Misfire Cyl. 1

    Ok whats the best place to start diagnosing this thing, and dont say LS Swap....

    Runs fine, maybe smells a little rich.
    Look at the Word Differently - In a World of Talkers, be a thinker and a doer.

  2. #2
    SUPPORTER LBarr2002's Avatar
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    Plug, wire, distributor.







    But if it were mine I'd LS swap it.
    '04 LJ Sleeper

  3. #3
    Twilliamson's Avatar
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    Quote Originally Posted by LBarr2002 View Post
    Plug, wire, distributor.







    But if it were mine I'd LS swap it.
    I just did that a couple years ago.. less than 15k miles. Guess i could do it again.
    Look at the Word Differently - In a World of Talkers, be a thinker and a doer.

  4. #4
    SUPPORTER LBarr2002's Avatar
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    Quote Originally Posted by Twilliamson View Post
    I just did that a couple years ago.. less than 15k miles. Guess i could do it again.
    Beyond that, compression test. Or injector.
    '04 LJ Sleeper

  5. #5
    SUPPORTER 97TJGUZZY's Avatar
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    bad plug caused that for me.
    --Brooks

  6. #6

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    Does it have the coil pack setup?


    Sent from my iPhone using Tapatalk

  7. #7

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    Have all cylinders firing is totally overrated ;)

  8. #8
    SUPPORTER highpockets's Avatar
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    Mine is a 98 and I had this on the number 3 cylinder. I tried everything that has been suggested and it would come right back. After some research I found out that there was a bad batch of springs for the 98s. Solution was to pull the head and have it rebuilt. Did that and, knock on wood no more problems.

  9. #9
    SUPPORTER LBarr2002's Avatar
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    Quote Originally Posted by highpockets View Post
    Mine is a 98 and I had this on the number 3 cylinder. I tried everything that has been suggested and it would come right back. After some research I found out that there was a bad batch of springs for the 98s. Solution was to pull the head and have it rebuilt. Did that and, knock on wood no more problems.
    Valve springs? How long ago did you do that and at what mileage?
    '04 LJ Sleeper

  10. #10
    SUPPORTER GREASEMONKEY's Avatar
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    Check the plug for fouling, or other damage.
    I would check the #1 plug wire with a meter.
    A redneck wire test is to swap the wire with the one closest to it's same length, and see if the misfire follows the wire.
    Check your valve adjustment, and check your mechanical timing.
    Po Pimpin in my beat up Jeep, ridin round on $2 of gas like I'm da President.

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