ID old Johnson Seahorse

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  • September 17, 2015 at 1:06 am #24055
    cark-k
    Participant

      Thank you!

      September 18, 2015 at 11:38 pm #24169
      cark-k
      Participant

        I had her running rough today for about 20 seconds but noticed gas slowly dripping from the back bottom bracket of the tank. I emptied the tank and filled it 1/2 way with soapy water, then I stuck my air nozzle in the gas valve to fill the tank with compressed air. I found the leak and also heard a loud POP. I Wasn’t expecting this! Is there a product I can use to seal the pinhole leak? Also, my spark-plugs are old Champion 7s, could use the plug and point gap. Is there a newer/better plug that will work? Thanks again.

        September 19, 2015 at 2:52 am #24185
        Mumbles
        Participant

          That’s one way to get the dents out! There are pour-in products such as Kreem to seal a leaky tank but if it’s a tiny leak, I’ve found Marine-Tex epoxy works pretty good. It sets hard and is fuel proof. Just follow the instructions.

          The original plugs in your motor were the now obsolete Champion 5MJ which were replaced by D9J but D9’s are a common over the counter plug. The only difference is the ground electrode is a bit shorter on the J plugs to help burn off deposits created by the oils used back in the day.

          Plugs are set at .030" and the points at .020" while the fuel mix is 1/2 pint of oil to each gallon of gas to make a 16:1 mix.

          September 22, 2015 at 1:29 am #24358
          cark-k
          Participant

            Thanks Mumbles.Got her running, lotsa work as you well know. I was able to stop the leak with a bit of epoxy.
            https://www.youtube.com/watch?v=oTQOD_VbAVE

            September 22, 2015 at 4:10 am #24366
            Mumbles
            Participant

              This is where all the work involved and long hours pay off, when you get them to run again and probable running better than they have in years. Great job! 😀

              September 22, 2015 at 5:31 am #24369
              cark-k
              Participant

                Thanks everyone for all the help! 😀

                September 23, 2015 at 3:38 am #24440
                cark-k
                Participant

                  Getting ready for the Lake Hopatcong, NJ meet. Hope to see you there! 1/2 of the outboards we’ll be bringing…

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