77 Model 85hp Johnson

Discussion in 'Bubba's Outboards' started by jstall, Jul 7, 2008.

  1. jstall

    jstall New Member

    Messages:
    196
    State:
    Gary Texas
    I have one cylinder not firing. Check fire with screw driver and get hot fire. Pull the plug and ground it and it is firing very good. Put it into cylinder it is not firing. Pull the plug after running the motor and it is shinny. looks wet but barely get anything on you finger when you wipe it. Is it a head gasket leaking?
     
  2. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    If you are getting water on that plug of any kind after running it then I would say you have a head gasket problem. Do a compression check and see if it holds. Being shinney and looks like its steamed clean is a good indication that its got gasket seapeage.
     

  3. Bobpaul

    Bobpaul New Member

    Messages:
    3,039
    State:
    Supply NC
    Looking into the plug hole, you'll also see a steam cleaned piston, if it's a water leak.