Recent content by jhotch

  1. jhotch

    1956 Evinrude 7.5 oil leaking

    New engine to me, owners said it would not run. Got the top end ignition and carb all set. Fired up on the second pull. At first water came up into the engine housing and then the lower unit got hot and started smoking. There was a fair amount of oil on the shaft and around the propeller and...
  2. jhotch

    Johnson 70 misbehaving at high altitude

    Been working on this all summer. Engine surges at wot. I am trying to understand the mechanics of the carbs behavior. I can eliminate the surge by pumping the primer hard. Engine is from sea level and brought to '6500 feet. Could the carb jets be allowing so much fuel to leave the bowl at...
  3. jhotch

    1990 Johnson 70 j70tlesb Close but still need help!

    I posted about this engine surging a while back. Since then I have replaced coils and power pack. condition improved but still surged after a minute at wot. Found some material in carb I (papery). cleaned it and problem continued. Decided to try pumping the bulb while it was surging and...
  4. jhotch

    90 johnson 70 cracked coils?

    Are these considered cracked? All of them tested in range.
  5. jhotch

    2nd cylinder has spark but no change when plug wire is pulled

    Motor idles well and runs fine until 2000 rpm and then starts surging after 15-20 seconds. Redid entire fuel system. Set linkage as per manual. Jumps right up onto plane and then starts surging. Today I started investigating ignition. Idle timing is at 4 atdc . All plugs had good spark...
  6. jhotch

    1990 Johnson 70 surging at WOT

    Hi all my boys have gone through this 1990 Johnson 70 to put behind their pandemic project. restoring a Boston Whaler Mischief 15 we found abandoned in the woods at a home remodel project. It starts right up. Replaced spark plugs, starter, selenoid, and tge previous owner of the motor got rid...
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