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Thread: Engine help needed

  1. #21
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    Quote Originally Posted by 95Jeep View Post
    Dumped in gas tank...engine treatment
    Ahhhh...I assumed you went direct into the engine (eg. oil) seeing as you are having this knocking sound now...


    You still didn't answer whether you checked what the codes were when the check engine light came on, was it making noise before the seafoam?
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  2. #22
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    I was told to put it in gas tank...I can try a can in oil. Haven.t checked codes yet, light hasn't been coming on lately...just same rattling like a diesel motor. What does the flex plate do?

  3. #23
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    Quote Originally Posted by 95Jeep View Post
    I was told to put it in gas tank...I can try a can in oil. Haven.t checked codes yet, light hasn't been coming on lately...just same rattling like a diesel motor. What does the flex plate do?
    I am not saying to toss it in the oil, just make sure you understand the way it is to be used if you do go straight into the oil BEFORE you do it.


    Personally I don't believe in things like seafoam, I think they are "miracle" additives that aren't needed if proper maintenance and service is performed at regular intervals.

  4. #24
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    Quote Originally Posted by 95Jeep View Post
    I was told to put it in gas tank...I can try a can in oil. Haven.t checked codes yet, light hasn't been coming on lately...just same rattling like a diesel motor. What does the flex plate do?
    If it's 'rattling like a diesel' most people associate that with pre-ignition which is the result of the fuel air charge lighting prior to the pistons reaching TDC. There are a few different reasons why this could be happening.

    However, it seems like we are dancing around all over the place in trying to understand exactly what the symptoms are that you are trying to describe. We aren't really getting anywhere here. Seriously consider taking your jeep to a mechanic or someone you trust with mechanical knowledge and experience. I'd like to help but we can only do so much over the interweb.
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  5. #25
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    Without actually hearing it and not sure if that motor has a timing chain or belt.
    If it's a chain it could be going.
    Your description sounds similar to what happened to my Explorer.
    When the chain completely let go it was my Exploder.
    Good news though.
    That gave me a good reason to order my new Jeep.
    Also heard cracked exhaust manifolds make similar noises.
    Last edited by Woodsman; 10-23-2014 at 02:30 AM.
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  6. #26
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    The flex plate (also called drive plate) is bolted between the engine and the torque convertor. If you had a clutch it'd be a proper flywheel. The flex plate is pretty thin and known to crack, bolts can also back out a bit and create quite a rattle. Crawl under there and check it out, there's an inspection cover.
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  7. #27
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    Thanks..i'll check it out

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