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does this test work if you have bad rings?

Discussion in 'Engine Building' started by The WORLD is yours..., Sep 27, 2004.

  1. The WORLD is yours...

    The WORLD is yours... Senior Member

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    quote from a friend of mine:
    " think you could pour a small amount of oil in the #3 cyl, and that will help seal up the rings a little better, and the compression will go up, if it is the rings. But, if its the valves, the compression shouldn't change at all."

    is this an accurate check for them? does it work? etc..?

    thanks
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Yeah, that's a good indicator- or you could get a leakdown tester and find out where stuff is really leaking.
     
  3. The WORLD is yours...

    The WORLD is yours... Senior Member

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    ok did the check today. it turns out that it's my ring in cyl. 3!! my C.P. went up to 260 from 115. then i kept checking that cyl.and with each test it went down about 10 psi!! i stopp'd when it was at 220 psi!!
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    It's most likely your rings then.... time for an engine rebuild.
     
  5. The WORLD is yours...

    The WORLD is yours... Senior Member

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    ok thanks. i guess now i have an excuse to get my engine build for high boost!!hehe

    if i use my car still. will it do any more damage to my engine?

    thanks
     
  6. B16

    B16 Super Moderator VIP

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    curious, what were your compression numbers before using the oil?
     
  7. reckedracing

    reckedracing TTIWWOP VIP

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  8. B16

    B16 Super Moderator VIP

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    i meant all 4 of them, thanks though :p
     
  9. The WORLD is yours...

    The WORLD is yours... Senior Member

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  10. B16

    B16 Super Moderator VIP

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    thanks, then yes i would say it is most definately your rings.
     
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