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Thread: compression test results

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  1. #1
    92 Hatch redneckhatch's Avatar
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    Default compression test results

    I bought a b18b the other day. So today I did a compression test and I got these readings.

    I had to do the test with the engine cold so I know that can effect the readings.

    1-95
    2-155
    3-155
    4-90

    Just need some ideas of what this could mean

  2. #2
    you live and learn Theycall_Metue's Avatar
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    does it smoke?
    probably compression rings or bent/burnt valve

  3. #3
    92 Hatch redneckhatch's Avatar
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    Quote Originally Posted by blue_gt View Post
    does it smoke?
    probably compression rings or bent/burnt valve
    I don't know if it smokes because its not in my car. I did the test with the engine out of the car.
    Last edited by redneckhatch; 04-09-2010 at 12:22 AM.

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    ^^this guy loves you jdm-civic's Avatar
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    put some oil in the cylinders before you do it again, and if the numbers go up, then its bad rings
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  5. #5
    92 Hatch redneckhatch's Avatar
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    Quote Originally Posted by jdm-civic View Post
    put some oil in the cylinders before you do it again, and if the numbers go up, then its bad rings
    And what if the numbers stay the same what could that mean.

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    Barefoot Motorsports
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    bad rings or fucked up walls


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    Senior Member SLow_POke's Avatar
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    just my e cents on a whime, since its 1-4 at some point the pistons have kissed the valves? Maybe if u do a CLT u will get a more definite answer.

  8. #8
    Newbie Photodude RBS's Avatar
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    with those numbers the engine will definitely run, if it runs good or not is a gamble. ive done compression tests where one minute its low and the next is high

  9. #9
    92 Hatch redneckhatch's Avatar
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    Ok thanks for all the replays here in the next few days I going to take apart the engine and look everything over. If I find anything ill post it up.

  10. #10
    OG Member/Supporter OG-Skinny's Avatar
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    Seems low in all the cylinders. My LS (B18B1) is around 180ish on all 4. I would check timing first to see if the Belt has slipped a tooth or two.

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