1963 Johnson RX11-A 28HP

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  • May 30, 2015 at 11:28 pm #1642
    kevinrude
    Participant

      OK, this is my first ‘big’ motor so bear with me.

      I cleaned the carb and put in new parts from a carb kit. I cleaned the fuel pump and put in new parts from a fuel pump kit, including a new filter. I changed all of the fuel lines. The good news is that it fired up when I pulled on it. The bad news is that it did not stay running. See video:

      http://vid856.photobucket.com/albums/ab125/kevinrude/outboard%20motors/1963%2028HP%20Johnson/video%201_zpstyj5gpxp.mp4

      I thought I had identified the problem when I noticed fuel leaking out between the gas tank and the housing. So, I took the housing off, cleaned the gasket, applied non-hardening sealer, re-attached the housing and gasket to the gas tank and, voila, no more leak!

      However, now the motor won’t start. I have done nothing else to the motor since fixing the gas tank.

      Any ideas?

      Thanks.

      May 30, 2015 at 11:32 pm #17233
      chris-p
      Participant

        From the short video, does not seem to be dying from lack of fuel? Maybe video is deceiving.

        As a side note, you need a deeper test barrel for that motor. The pump is up much higher than your water level, and it is not self priming. It wont pump like that.

        What is the compression?

        I assume you checked spark? Will it jump a 1/4" gap on a tester? Have you gone over ignition? Checked coils, dressed points, etc…?

        May 30, 2015 at 11:45 pm #17237
        kevinrude
        Participant
          quote Chris_P:

          From the short video, does not seem to be dying from lack of fuel? Maybe video is deceiving.

          As a side note, you need a deeper test barrel for that motor. The pump is up much higher than your water level, and it is not self priming. It wont pump like that.

          What is the compression?

          I assume you checked spark? Will it jump a 1/4″ gap on a tester? Have you gone over ignition? Checked coils, dressed points, etc…?

          Yep, new plugs getting a pretty blue spark. Compression tested fine too, but can’t remember the #s.

          May 30, 2015 at 11:49 pm #17238
          chris-p
          Participant

            have you looked at the ignition? Pulled flywheel?

            Cracked coils will give a nice blue spark as well if you hold the plugs to the block, so could dirty points. Just a thought.

            I always pop the flywheel and give everything the once over. Polish the points, set at 020 or use timing fixture if you have one. Then clean with business card or paper stock dipped in acetone.

            May 31, 2015 at 12:08 am #17239
            frankr
            Participant

              US Member

              Typical symptoms of cracked coils. At least take a look

              EDIT: Actually, it sounds like it had suddenly lost spark. Sheared flywheel key? Shorted stop wires/switch?

              May 31, 2015 at 12:19 am #17241
              kevinrude
              Participant
                quote FrankR:

                Typical symptoms of cracked coils. At least take a look

                EDIT: Actually, it sounds like it had suddenly lost spark. Sheared flywheel key? Shorted stop wires/switch?

                Interesting that you mention the stop wires. The motor is a manual start now, but it looks like it once had an electric start. I checked my Johnson manual and it said that the ‘ground lead’ should be removed when installing an electric ignition. My motor does not have a ‘ground lead’. Also, the instructions in the manual say to add a ‘white lead (safety switch)’ when installing an electric starter. My motor has one of these.

                So, maybe this motor used to have an electric start and now doesn’t? I figured since I was getting spark the stop switch couldn’t be the problem. Maybe not.

                Picture below shows what I am talking about.

                May 31, 2015 at 12:42 am #17243
                chris-p
                Participant

                  I would wire it for manual start, and remove the unnecessary items, or at least tape them off. Add the lead.

                  But most importantly, pull that flywheel!

                  May 31, 2015 at 12:43 am #17244
                  kevinrude
                  Participant

                    Here’s some more videos of me scratching my head and rubbing my chin, in case they help:

                    http://vid856.photobucket.com/albums/ab125/kevinrude/outboard%20motors/1963%2028HP%20Johnson/video%202_zpsqnewyipb.mp4

                    http://vid856.photobucket.com/albums/ab125/kevinrude/outboard%20motors/1963%2028HP%20Johnson/video%203_zpsvwut77lt.mp4

                    May 31, 2015 at 1:00 am #17246
                    chris-p
                    Participant

                      Yeah, definitely not fuel. Bad Coils. Partially sheared key. Shorted Wire. Something like that.

                      May 31, 2015 at 2:59 am #17260
                      kevinrude
                      Participant

                        OK, thanks fellas. Into the ignition system I go tomorrow!

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