Logo
Results 1 to 9 of 9
  1. #1
    Join Date
    Apr 2009
    Location
    oshawa, ontario, canada
    Posts
    8

    Default "my 86 3l cobra is leaking wat

    "my 86 3l cobra is leaking water around the stern when docked, i have looked to try and find a leak with no results. i have inspected the hull very carefully and gel coated any scrateches. the interesting thing is it leaks water at different rates dependind on where i have left the stern drive positioned. any help woud be great. thanks .
    Best regards Grant"

  2. #2
    Join Date
    Mar 2008
    Location
    El Dorado, AR, U.S.
    Posts
    317

    Default "Could be several things but i

    "Could be several things but if the position of the drive affects the leak rate, it sounds like your u-joint bellows is leaking. Tilting the drive up stretches the bellows and opens the wound. You need to act soon. A catastrophic failure can sink your boat. Also you should check your drive lube for water contamination. A leaking bellows will leak past the input shaft oil seal."

  3. #3
    Join Date
    Apr 2009
    Location
    oshawa, ontario, canada
    Posts
    8

    Default "thanks Chuck, the oil looks g

    "thanks Chuck, the oil looks good no water, can i confirm the u-joint bellows as the cause, before preforming a replacement? if i tilt the drive up i should be able to see a tear?
    thanks Grant"

  4. #4
    Join Date
    Mar 2008
    Location
    El Dorado, AR, U.S.
    Posts
    317

    Default "Maybe, maybe not. You might g

    "Maybe, maybe not. You might get some idea of it's condition by feeling of it where you can reach it. I guess I assumed it is leaking worse in the "up" position which would point more to a leak on the bottom side of the bellows."

  5. #5
    Join Date
    Jul 2007
    Location
    Council Bluffs, IA, US
    Posts
    31

    Default "I had the same issue on my 89

    "I had the same issue on my 89 2.3 litre with a cobra outdrive. Mine was a split hose. I have no idea if your's is the same thing but it might be worth looking at. Here is some info on the hose. http://www.boats.net/parts/detail/B-0911830.html"

  6. #6
    Join Date
    Apr 2009
    Location
    oshawa, ontario, canada
    Posts
    8

    Default "ok, i bilged then toweled the

    "ok, i bilged then toweled the boat inner hull. waited and watched. looking from the transom area . drip drip. i moved the tilt up and it got faster. pulled the boat out and the bellows look and feal deteariorated. i will replace both bellows. question. the water is always in the exhaust bellow as its ported under the water, it is most likely the one leaking? again i will replace both. just tring to think the problem through. thanks again
    Best regards Grant"

  7. #7
    Join Date
    Mar 2008
    Location
    El Dorado, AR, U.S.
    Posts
    317

    Default Problem is likely the u-joint

    Problem is likely the u-joint bellows. Water leaking into it will leak past the gimbal bearing into the boat. It is normal for the exhaust bellows to have water in it.

  8. #8
    Join Date
    Apr 2009
    Location
    oshawa, ontario, canada
    Posts
    8

    Default "thanks Chuck, i will keep you

    "thanks Chuck, i will keep you posted on my repairs"

  9. #9
    Join Date
    Mar 2008
    Location
    El Dorado, AR, U.S.
    Posts
    317

    Default "I highly recommend this one:


Similar Threads

  1. 1995 OMC COBRA 3OL SOUNDS LIKE EXHAUST LEAK
    By jimmen12 in forum OMC Sterndrive and Inboard Archive
    Replies: 9
    Last Post: 05-04-2009, 07:36 AM
  2. 1989 OMC Cobra Stern Drive water leak
    By vicperdido in forum OMC Sterndrive and Inboard Archive
    Replies: 1
    Last Post: 05-12-2008, 07:32 AM
  3. Water leak into boat when setting in water bellows suspect
    By David Ray in forum Mercruiser Sterndrive Archive
    Replies: 7
    Last Post: 02-14-2008, 09:44 PM
  4. OMC Cobra Engine oil leak
    By garryuk in forum OMC Sterndrive and Inboard Archive
    Replies: 3
    Last Post: 09-12-2007, 02:43 PM
  5. Omc cobra 57l water stepped water hose
    By johanes in forum OMC Sterndrive and Inboard Archive
    Replies: 2
    Last Post: 02-05-2006, 11:34 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •