1987 MERCRUISER 4 CYL... 2nd Problem.. (water from coolant resevoir exiting outdrive)

Discussion in 'Sterndrives' started by kenrahe, May 1, 2013.

  1. kenrahe
    Joined: Apr 2010
    Posts: 101
    Likes: 1, Points: 0, Legacy Rep: 24
    Location: pomfret ct

    kenrahe Sunseeker

    This motor has a closed circut cooling system (fresh water) and while trying to adjust shifting lever and cutoff switch i filled the coolant resevoir and noticed the water comming out of the outdrive... boat was winterized and all plugs opened and last seasons water drained..what would cause it to leak out of the outdrive......is my heat exchanger bad..the reseroir is on top of exhaust manifold is there a gasket seperating the two that could have gone bad!!!! or what hoses should i check....SORRY!!!! THE MOTOR IS A MERCRUSIERS 224/165HP INLINE 4 (Exhaust manifold and reseroir is on port side of motor)
     
    kenrahe, May 1, 2013
    #1
  2. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    Were you filling the reservoir with water or antifreeze mix?
     
    gonzo, May 1, 2013
    #2
  3. kenrahe
    Joined: Apr 2010
    Posts: 101
    Likes: 1, Points: 0, Legacy Rep: 24
    Location: pomfret ct

    kenrahe Sunseeker

    antifreeze mix
     
    kenrahe, May 1, 2013
    #3
  4. jonr
    Joined: Sep 2008
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    Location: Great Lakes

    jonr Senior Member

    A crack caused by freezing? Hopefully not.
     
    jonr, May 1, 2013
    #4
  5. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    However, you said that water was coming out of the outdrive.
     
    gonzo, May 1, 2013
    #5

  7. CDK
    Joined: Aug 2007
    Posts: 3,324
    Likes: 148, Points: 63, Legacy Rep: 1819
    Location: Adriatic sea

    CDK retired engineer

    Sounds like the heat exchanger exchanges more than just heat!
    If it was originally installed, the age of 26 years alone justifies a replacement, but it may also be just a leaking rubber seal.
     
    CDK, May 2, 2013
    #6
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