Recent content by MKMG

  1. M

    1978 Johnson 15 stalls under load

    Compression test: top-92, bottom-100. I’ll check the impeller but it only has a few hours on it since replaced. Maybe it was installed incorrect or defective since the problem started soon after that tune up.
  2. M

    1978 Johnson 15 stalls under load

    I will check the compression this week. I don’t think it’s a load issue, once the skier is up I’m only 3/4 throttle. Maybe more of a run time thing. I only go out by myself at WOT for 10-15mins but when pulling kids it’s usually 30-40mins of use before issue starts. Does a solid water stream...
  3. M

    1978 Johnson 15 stalls under load

    My 1978?, stalls under load. It starts Ok, idles good. Runs great at WOT with just me in the boat but when I start pulling kids around on water skis etc it stalls and won’t start. I paddle home and it starts and runs fine 30 mins later. The motor does feel warm but I have never taken note to...
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