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  1. #1

    Default 2005 Mercruiser Enging Water Leak

    Advice please....We just purchased this boat and noticed that there is water coming out of the back of the engine, about 1/4 from top of engine. Is this a popped freeze plug? What can I do for a temp fix to block the water coming out of this little hole?https://youtu.be/gZx7KXDCUOQ
    Last edited by Narbuckle; 06-06-2020 at 01:33 PM.

  2. #2
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    5,136

    Default Re: 2005 Mercruiser Enging Water Leak

    Can you return it and get your money back?
    popped core plug or cracked block, pull the drive, pull the engine, remove rear cover,coupler, flywheel and look

  3. #3
    Join Date
    Dec 2006
    Location
    Greenfield Me. USA
    Posts
    6,042

    Default Re: 2005 Mercruiser Enging Water Leak

    What can I do for a temp fix to block the water coming out of this little hole?
    Ayuh,...... Any fix will start with pullin' the motor,......
    Any Grease is Better,... Than No grease at All....

  4. #4

    Default Re: 2005 Mercruiser Enging Water Leak

    The water is coming out of a small opening above the rear cover above the flywheel. any thoughts?

    wont let me post a pic of it

  5. #5
    Join Date
    Jun 2008
    Location
    Island Heights, NJ,
    Posts
    3,326

    Default Re: 2005 Mercruiser Enging Water Leak

    Quote Originally Posted by Narbuckle View Post
    The water is coming out of a small opening above the rear cover above the flywheel. any thoughts?

    wont let me post a pic of it
    There is a maximum size limit to posted images....
    Capt Bob
    1969 23ft ChrisCraft Lancer
    Merc 5.7L 260HP/ Volvo 280

  6. #6

    Default Re: 2005 Mercruiser Enging Water Leak

    Click image for larger version. 

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    Quote Originally Posted by sandkicker View Post
    There is a maximum size limit to posted images....

  7. #7

    Default Re: 2005 Mercruiser Enging Water Leak

    This is the pic of the small opening at the top of the fly wheel cover. Ran all day on lake but noticed more water when we pulled the plug and then we ran engine and saw this. Did not see water in the oil. Click image for larger version. 

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  8. #8
    Join Date
    Jun 2006
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    Spotswood, NJ, USA
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    Default Re: 2005 Mercruiser Enging Water Leak

    a pushed out core plug or a cracked block, pul and disassemble

  9. #9
    Join Date
    Sep 2010
    Location
    Jersey Shore
    Posts
    5,948

    Default Re: 2005 Mercruiser Enging Water Leak

    Quote Originally Posted by Narbuckle View Post
    This is the pic of the small opening at the top of the fly wheel cover. Ran all day on lake but noticed more water when we pulled the plug and then we ran engine and saw this. Did not see water in the oil. Click image for larger version. 

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    What you see is the water being flung around by the flywheel. You will have to pull the engine.... End of story.
    Chris
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

  10. #10

    Default Re: 2005 Mercruiser Enging Water Leak

    Quote Originally Posted by Docksidemarineservices View Post
    What you see is the water being flung around by the flywheel. You will have to pull the engine.... End of story.
    If it is just a core plug will it hurt the engine to go out on the lake? I did not see ANY water in the oil which leads me to believe it is just the plug. Thank you

  11. #11

    Default Re: 2005 Mercruiser Enging Water Leak

    Quote Originally Posted by Narbuckle View Post
    If it is just a core plug will it hurt the engine to go out on the lake? I did not see ANY water in the oil which leads me to believe it is just the plug. Thank you
    hard to say from here if it comes all they way out Likely u will over heat. If it is just the core plug (you’d be lucky) pull the engine up, get flywheel cover off, pull flywheel replace the plug ... would be fixed relatively quickly. Somebody must have winterized by sucking in AF vs draining first

  12. #12
    Join Date
    Jun 2006
    Location
    Spotswood, NJ, USA
    Posts
    5,136

    Default Re: 2005 Mercruiser Enging Water Leak

    The water is saturating the starter and it`s wiring. You will overheat and damage whatever is left of the engine.
    In the video you can see the size of the plug
    https://www.youtube.com/watch?v=-mH4O_HatUY
    Last edited by Bt Doctur; 06-07-2020 at 09:39 PM.

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