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low compression in cyl. 1

Discussion in 'General Tech and Maintenance' started by redef91, Aug 9, 2011.

  1. redef91

    redef91 Senior Member

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    i recently did a compression check on my b18c5 and cyl. 1 tested 180 and 2,3,4 all tested 210psi. the reason why i tested for this to begin with was my car would smoke a bit when i would stop at a stop light and take off again. my question to uses would be is this bottom end issue or head issue? also when i dropped a teaspoon of oil in to cyl. 1 the compression rose to 205psi:huh:
     
  2. FLounder

    FLounder power hungry VIP

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    the only way to know for sure is to do a leak down test. but judging by the compression jumping 25psi with oil i would lean towards the bottom end.
     
  3. Dj211855

    Dj211855 New Member

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    Sounds like piston rings. Add oil in all of them and re do the test and compare again. Or do a leak down test.
     
  4. Magana559

    Magana559 The Warden

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    sounds like rings buddy
     
  5. BIGROB90

    BIGROB90 New Member

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    every one else is right i had the same prob with my b18c i sold, any idea if it had nitrous or turbo on it??
     
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