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  1. #1
    Join Date
    May 2009
    Location
    Peachtree City, GA
    Posts
    33

    Default Water in the Oil

    I found water in the oil after the summer, bringing it home to winterize in the fall. The oil looked like chocolate milk. Did not look this way in the spring.

    Today I went over to the lake and pulled the plugs and did a compression check. All above 160. Put new plugs in and ran the boat for 20 minutes on the trailer. No sign of water on the dip stick, but it was hard to tell. I will go back over, drain the oil again and repeat, only letting the boat run longer.

    Any thoughts?

    David
    1999 Santera

  2. #2
    Join Date
    Dec 2013
    Posts
    633

    Default

    That can be caused by a cracked block or bad head gasket. But, it can also happen on a perfect engine if you only run it for short periods without letting it fully warm up. Condensation builds and does not have a chance to boil out.

  3. #3
    Join Date
    Jul 2007
    Location
    Flowery Branch Georgia
    Posts
    2,638

    Default

    Check the exhaust manifolds also.

  4. #4
    Join Date
    May 2009
    Location
    Peachtree City, GA
    Posts
    33

    Default

    Thanks, I'll run it longer and look at the manifolds. If they are cracked, can they be welded?

  5. #5
    Join Date
    May 2019
    Location
    Arizona
    Posts
    161

    Default

    Quote Originally Posted by TX skier View Post
    Thanks, I'll run it longer and look at the manifolds. If they are cracked, can they be welded?
    Iím guessing your in Texas so did you winterize? What the others said is spot on. If your block or manifold froze then that maybe thatís the issue. Sorry not trying to be a Debby Downer but water in the oil is pretty bad but it doesnít take much water to contaminate it all.


    Sent from my iPhone using Tapatalk

  6. #6
    Join Date
    Dec 2013
    Posts
    633

    Default

    Quote Originally Posted by TX skier View Post
    Thanks, I'll run it longer and look at the manifolds. If they are cracked, can they be welded?
    No, in general cast iron is not weldable. It can be done, but it will not last.

  7. #7
    Join Date
    Dec 2016
    Location
    Louisville, KY
    Posts
    135

    Default

    Quote Originally Posted by michael hunter View Post
    Check the exhaust manifolds also.
    Iím going through this right now. Are you familiar with the signs of a failed exhaust manifold? When I loosened both, water immediately started pouring out from where the manifold meets the exhaust port on the block. I assume this is probably a solid indicator is has an internal crack, correct?


    Sent from my iPhone using Tapatalk
    '92 Comp ts6m - 5.8 PCM Pro Boss Carb
    '02 Launch SS - 5.7 Indmar Assualt TBI

  8. #8
    Join Date
    Dec 2016
    Location
    Louisville, KY
    Posts
    135

    Default

    Quote Originally Posted by michael hunter View Post
    Check the exhaust manifolds also.
    I should also specify theyre ETX manifolds, non cat.


    Sent from my iPhone using Tapatalk
    '92 Comp ts6m - 5.8 PCM Pro Boss Carb
    '02 Launch SS - 5.7 Indmar Assualt TBI

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