OK, Trying to start my Bendix;TOO Much Compression

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  • April 16, 2020 at 5:48 pm #200182
    Frederic Seifer
    Participant

      I am very NEW to this…like I have never worked on an outboard motor…but I am mechanically minded and pretty capable around my home shop ,attentive and a determined student. I have this 1939 Bendix Eclipse TMD. I was told that when it was restored (6-7 years ago) it was READY to run. It has been a show piece up until now. I recently moved to a lake home and I want to get this motor running . I Just received my pull rope today so I thought I would check it out. The COMPRESSION is too much. If I give it a good pull it will turn about half a turn fairly easy and then it is really hard to pull. There no grinding sound in the top or lower end so I do not think anything is binding. It feels like something needs some lubrication. Please HELP. I really want to get this motor running again. Thank you. My phone cell phone number is 423.718.3212. My home number which is the best number to reach me in the evenings is 315.262.2327. Eric

      April 16, 2020 at 6:28 pm #200184
      fleetwin
      Participant

        US Member

        Well, I would remove the spark plug and rotate the engine by hand to determine if there is something mechanically binding the powerhead. Perhaps the powerhead is just full of storage oil causing it to hydraulic lock….

        April 17, 2020 at 4:07 pm #200289
        Frederic Seifer
        Participant

          I took out the spark plugs as advised ( THANK YOU :)…that helped a lot. Compression is very reasonable with plugs out…fly wheel spins around multiple times with one good NOT strenuous pull. However, when I put the plugs back in the compression is still very STOUT. An outboard person that I am friends with off this sight suggested a couple of short sprays of WD40 into each cylinder through the plug openings. I did that and that helped somewhat…but still very STOUT compression. I still have to give it a really good pull to get the fly wheel to move around just ONE turn. Any suggestions? Eric

          April 17, 2020 at 4:32 pm #200290
          dave-bernard
          Participant

            US Member

            sounds like you have very good compression and when you use gas and it tries to start you will be fine.

            April 18, 2020 at 10:22 am #200417
            sutterhome
            Participant

              timing cam in wrong?

              April 18, 2020 at 10:24 am #200418
              Tom
              Participant

                US Member

                Remove the plugs again and verify there is no evidence that they are contacting the pistons. What plugs are in the motor?

                T

                April 18, 2020 at 10:39 pm #200496
                Mumbles
                Participant

                  Here’s a video of late club member Art S. tearing up the water somewhere with his 1940 TMD and a link to his website with some info on the Bendix motors.

                  http://www.oddjobmotors.net/bendix.htm

                  https://youtu.be/Mbkn97LsMoU

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