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    Member No: 30116 ersanto is an unknown quantity at this point ersanto's Avatar
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    No compression

    2004 325i about 79k miles

    Car did not start. Had to tow it to my mechanic and he said there was no compression, which was restored by putting some transmission oil in the cylinder (?).
    Not sure what may have caused this.

    Anybody knows, or has gone through something similar ?
    TIA
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    Quote Originally Posted by ersanto View Post
    2004 325i about 79k miles

    Car did not start. Had to tow it to my mechanic and he said there was no compression, which was restored by putting some transmission oil in the cylinder (?).
    Not sure what may have caused this.

    Anybody knows, or has gone through something similar ?
    TIA


    This would be bizarre if exactly as described. When you tried to start, did the engine spin much faster then normal?

    No compression on all cylinders? Or only a few?
    What tranny do you have? Over-revved recently?
    Need to do a full compression test if not done already. Maybe examine to see if you have a connected timing chain.
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    Quote Originally Posted by Stinger9 View Post
    This would be bizarre if exactly as described. When you tried to start, did the engine spin much faster then normal?

    No compression on all cylinders? Or only a few?
    What tranny do you have? Over-revved recently?
    Need to do a full compression test if not done already. Maybe examine to see if you have a connected timing chain.
    Thanks for the reply.
    Transmission is manual.
    Didn't say on how many cylinders and I never overrev engine; rarely drive above 4000rpm.

    On start I cold only hear a uniform high pitched whirring noise, like if there was some action in the starter, but the engine didn't really cycle.

    On another forum I found an entry about common starting troubles for E46's: When you start the engine repeatedly, as I just did to move the car twice to accommodate movers, engine tends to flood.
    Not sure if it could have been that.

    Car has been working just fine (knock on wood)
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  4. #4
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    If you're going to treat it as a no start situation, here's the article to take you thru the steps.
    Think it starts on p. 4
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