3 hp yachtwin

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  • September 12, 2015 at 6:26 pm #23698
    1957evinrude
    Participant

      US Member

      Oh I found the problem like was said the copper tubing st the 90 was clogged. I blew out the rest of powerhead after then I took off exhaust cover all the holes were clear. I will try it later today. The gaskets seem good but I should probably replace them.

      September 12, 2015 at 8:17 pm #23704
      Mumbles
      Participant

        I’m glad to see you found and solved the problem. The sharp turn in the water tube can cause problems and is usually overlooked!

        I picked up a ’57 Lightwin cheap once because it kept running hot for the owner and he couldn’t figure out why. It took me a few late nights and teardowns to finally discover a small pebble had made its way thru the pump and lodged itself in the bend. The tube seemed clear while blowing air thru it but the pebble must have restricted the water flow enough to cause the overheat condition. The motor runs great now and is on the restore list!

        September 12, 2015 at 10:14 pm #23711
        1957evinrude
        Participant

          US Member

          Yes doesn’t take much. This was the first old motor I ever bought so it is special to me.

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