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Thread: 1999 Mobius

  1. #1
    Join Date
    Mar 2016
    Posts
    15

    Default 1999 Mobius

    Hello everyone, I am currently looking at picking up a '99 Mobius 20". As this will be my first boat I am a little worried about a couple things. There is water coming in the engine bay from 2 places and am worried if this is something to worry about enough to avoid the purchase. The first place is from the hoses on the front, it's definitely more than a drip and the second place is from the what I am assuming is the shaft seal towards the back, also leaking at a borderline stream. Any insight from you guys would be helpful. Thanks

  2. #2
    Join Date
    Jan 2008
    Location
    Tallahassee, FL
    Posts
    14,071

    Default

    Hoses on the front are probably cooling hoses. That should be taken care of. Engine may have overheated. Be careful with this one. Get her checked over.

    The shaft seal leaking is not a big deal. May be able to just tighten the jam nut and get it to weep instead of stream. It is supposed to drip once or twice a minute to stay lubricated. Too much means it likely needs a new shaft packing. Anybody can do this. Instructions are available on this board.
    My Mom said I'm not allowed to get wet!
    2008 LSV (sold)
    2000 Outback LS (sold)
    LLTR!!!!!!!!



  3. #3
    Join Date
    Mar 2016
    Posts
    15

    Default

    Quote Originally Posted by kaneboats View Post
    Hoses on the front are probably cooling hoses. That should be taken care of. Engine may have overheated. Be careful with this one. Get her checked over.

    The shaft seal leaking is not a big deal. May be able to just tighten the jam nut and get it to weep instead of stream. It is supposed to drip once or twice a minute to stay lubricated. Too much means it likely needs a new shaft packing. Anybody can do this. Instructions are available on this board.
    Yea I am thinking maybe just old hoses easy to replace. I read through the shaft seal replacement and seems pretty DIY. Could there be another possibility if its not the seal? something that may be more than a $6 and some elbow grease fix?

  4. #4
    Join Date
    Oct 2004
    Location
    Middle TN
    Posts
    148

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    Quote Originally Posted by Newguy View Post
    Yea I am thinking maybe just old hoses easy to replace. I read through the shaft seal replacement and seems pretty DIY. Could there be another possibility if its not the seal? something that may be more than a $6 and some elbow grease fix?
    The jam nut either needs to be adjusted or the packing replaced which would be a $20 part purchase.

  5. #5
    Join Date
    Mar 2003
    Location
    Springfield Missouri
    Posts
    3,392

    Default

    The end of the hoses get worn and frayed from being removed for winterization. Repacking requires removing the floor which is a PITA. Use good quality cord and avoid wax cord as it wears out much faster. Twelfth year with graphite cord with one adjust. Almost as good as frictionless bearings. Another source of water intrusion are the pitot hoses from the speedo pickups. I don't see anything major.
    1998 Mobius
    310 HP PCM
    SOLD

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