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  1. #1
    Registered Pure Energy's Avatar
    My Boats:
    2001 Superboat Y2K
    Join Date
    Oct 2000
    N. NJ, Eastern LI

    Question Could a bad valve guide cause.....

    blue smoke and oil out the exhaust and low oil pressure after coming down off plane or when engine is warm?


  2. #2
    Official OSO boat whore Charter Member
    My Boats:
    8' row boat
    Join Date
    Oct 2000
    Mequon, WI
    No. A bad guide will usually show up as a momentary smoke on startup. When coming off of plane there is a high vacuum. This could be sucking oil from a number of places. For example a bad intake gasket or loose rings. The loss of oil pressure would suggest that bearing clearances are getting loose enough that the pump isn't able to keep up. Of course there can be other causes such as excessive oil temps etc...

  3. #3 Charter Member Mrgoodwrench's Avatar
    My Boats:
    1998 American Offshore 2600
    Join Date
    Oct 2000
    LBC, So Cal. Where else?


    Let me tell you about a bad valve guide I had valve guide come out of the head while driving Then comes a horrifficc noise!!!!! Valve imbedded into piston and cylinder and and about 5K in damage . Anyway I am still hostile about this. Its all my fault but it was still expensive.

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