1937 Evinrude fisherman 4.4 hp spark issue

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  • April 4, 2020 at 10:01 am #199097
    Geer Pyron
    Participant

      Yozers all!
      Been working on a ‘37 evinrude fisherman, model #4227.
      The coil was bad. Couldn’t easily find a replacement. So I did the coil swap-a-roo with two later style coils. Same heels with 1/16 modification to the lams that run through the coils, as well as removal of two. To get that center piece through. Nothing removed from heels. Little bit of a clearance issue, but not bad. Original condenser seems good.
      I get spark with the d-cell bench test. I don’t get spark, reliably anyway, when flywheel is installed and I pull it over.
      Okay, questions.
      1) Should the needle on my resistance tester move when one lead is connected to points, the other to ground when the points are open? No resistance. Or vice versa?
      2) Coil spacing? I’ll attach a picture. Does this look okay? Other than obvious clearance issue with coil with the blk spark plug lead?
      Thanks
      Geer

      9443E9CF-2005-48CD-AAC3-FDFA5E0D4E62

      JMGP

      • This topic was modified 4 years ago by Mumbles.
      April 4, 2020 at 10:16 am #199100
      Geer Pyron
      Participant

        Okay,
        Something amiss.
        I get no resistance, the needle on my tester moves, when one lead connected to points the other to ground regardless of points open or closed.
        Hmmm
        G

        JMGP

        April 4, 2020 at 10:23 am #199101
        The Boat House
        Participant

          April 4, 2020 at 11:11 am #199108
          Geer Pyron
          Participant

            Gracias.
            I’ll give it a go.
            Still the resistance/continuity test though.
            G

            JMGP

            April 4, 2020 at 11:44 am #199110
            squierka39
            Participant

              US Member

              Also the condensers may not work with the new coils. I had a friend with same problem, he put in the proper condensers and it sparked right up.

              April 4, 2020 at 11:52 am #199112
              Geer Pyron
              Participant

                Okay.
                Thought about that issue so when I assembled it initially I used a condenser that belongs with the newer style coil. That’s when I had the problem.
                In my picture, and original post I had already put the older, original condenser back on.
                Same issue.
                I’ll try to get the condenser chart to make sure the older con. will work with newer coils.
                Thanks,
                G

                JMGP

                April 4, 2020 at 12:22 pm #199123
                Mumbles
                Participant

                  It sounds like your points are dirty if your meters reading doesn’t change when the points are opened or closed. Also, make sure your meter is set to its lowest ohm reading possible.

                  Good spark with a battery but poor spark with a flywheel? That indicates everything is OK on the mag plate but what about the condition of the flywheel magnets? They might be getting weak and need recharging.

                  April 4, 2020 at 11:35 pm #199218
                  Geer Pyron
                  Participant

                    Update!
                    Issue solved!
                    Points were replaced.
                    A friend helped me out with another set. Battery test was good, but then again, bad spark with flywheel pullover. Clearance issue!
                    The black spark plug wire in photo was rubbing on the flywheel and so the electricity was going to the flywheel as opposed to the spark plug.
                    I modified that coil a little more and soldered the wire on. No more clearance issue.
                    All good.
                    With that anyway.
                    Still wouldn’t start!
                    Low compression, 70 and 80 psi.
                    Ahhhhh!
                    Stuck rings.
                    Ahhhhh!!!!
                    Broke one trying to unstick it!!!!!
                    Any one got a spare set laying around?
                    Thanks for input,
                    G

                    JMGP

                    April 5, 2020 at 9:34 am #199229
                    The Boat House
                    Participant

                      .

                      April 5, 2020 at 8:02 pm #199310
                      Geer Pyron
                      Participant

                        Thank you Mr. Tubbs!
                        Called him up at four o’clock onSunday in the middle of a pandemic and lo (!) he answers and takes my order. He knew exactly what I needed. And inexpensive too. Or less than I was expecting to pay.
                        Why have a spent $60 on rings before?
                        He has sheets of head gasket material too!
                        Thanks again
                        G

                        JMGP

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