1960s 3 hp evinrude yachtwin probem

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  • September 14, 2015 at 2:05 pm #23847
    1957evinrude
    Participant

      US Member

      Im using built in gas tank but I also borrowed one from my yahctwin and still the same also swapped carb from my good running ducktwin. It idles well its just at about 1/2 throttle or more it just seems to run out of gas. I double checked all the ignition and strong spark. I made sure I had timimg correct also.
      This engine has me confused
      🙂

      September 14, 2015 at 4:24 pm #23856
      theodore
      Participant

        Check the spark with the throttle plate at idle, check with the throttle at 3/4 or full. Are you losing spark?

        September 14, 2015 at 4:38 pm #23857
        Mumbles
        Participant

          Maybe take a look at your spark plug wires and see if they are worn thru anywhere and shorting out. As you advance the mag plate, they tend to bunch up and rub in certain areas.

          September 14, 2015 at 5:39 pm #23862
          1957evinrude
          Participant

            US Member

            I can check that also.

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