1965 Johnson 18FM-18E bolts on coils broke now got a mess

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  • July 17, 2024 at 7:58 pm #289224
    Hugh Davis
    Participant

      This beloved member of family went swimming then was pulled out of water and left for a few days

      We got her cleaned up and running like a champ but somehow the coil bolts loosened and broke free cannonballing the magneto plate and one coil around under flywheel.

      we cannabalized an old 1957Johnson 18 FDL-13 coil and have good blue spark but can get her to get going again; I can sometimes get it to backfire and act like it want to start up but I haven’t gotten farther than that.

      Can anybody tell me what gap the coils should have or any other possible solutions?

      20 thousandths is not working

      Thanks.

      July 17, 2024 at 8:03 pm #289225
      crosbyman
      Participant

        Canada Member - 2 Years

        coil gaps ?? or points gap ???

        coils should line up on their  mounting … fingernail should not snag up or down

         

        points are .20    change or test  capacitors !   test secondaries OHMS  values 4-8kohms

        Joining AOMCI has priviledges 🙂

        July 17, 2024 at 8:25 pm #289227
        Hugh Davis
        Participant

          sorry what I meant to say is the gap on the points.

          and Thanks!!!!

          July 17, 2024 at 8:46 pm #289228
          The Boat House
          Participant

            Check to be sure you havent switch the spark plug wires.

            1 user thanked author for this post.
            Hugh Davis
            July 18, 2024 at 6:46 pm #289252
            fleetwin
            Participant

              US Member - 2 Years

              Or, perhaps you have the coil primary leads routed to the wrong points, or perhaps the point cam is upside down..

              July 21, 2024 at 9:13 am #289309
              Hugh Davis
              Participant
                The Boat House wrote:

                Check to be sure you havent switch the spark plug wires.

                boat, the top wire still has its steel ring band marking which is which

                July 21, 2024 at 9:14 am #289310
                Hugh Davis
                Participant

                  Fleetwin, thanks! Will check this.

                  July 21, 2024 at 9:18 am #289311
                  Hugh Davis
                  Participant

                    Would anybody have a part number for the coils on this FM-18E ?  I think I should be able to find after market from Sierra.

                    Thanks!!

                    Hugh

                    July 21, 2024 at 8:17 pm #289334
                    Steve D
                    Participant

                      Do you mean points or coils? Not sure what motor you have but here are the numbers for the universal ignition coil. Some have had various degrees of success, problems with fit, etc. with the real cheap ones on ebay

                      coils-marineengine
                      .

                       

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