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  1. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Well I took her out and had great success!
  2. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Found the leak well as far as I can tell without being in the water. Power steering cooler spraying everywhere.
  3. R

    4.3L OMC Cobra 1988 engine knock/rattle

    When running bilge is taking on water. Hmm next problem lol
  4. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Problem solved. Pulled engine and had super loose bolts on fly wheel.
  5. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Well with the drive pulled the noise still prevails unfortunately. So it looks like we're going to be pulling the engine, flipping her over and pulling the pan and hopefully find something we can fix quite quickly without having to replace too many parts. After pulling a good sample of the oil...
  6. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Exhaust flappers are okay. Ordered a new gimbal bearing in hopes it could be this and will be pull the drive then to find out... Will keep you posted. Any other suggestions?
  7. R

    4.3L OMC Cobra 1988 engine knock/rattle

    Hey all. I picked up this boat. I am new to the scene. It starts up great but has this knocking / rattle it's very defined at idol but goes away with rpm's. It sounds like it's coming from the back by the transom. Check out this video.
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