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    50 hp Johnson Getting Hot

    1985 50 hp is getting hot. Impeller looked good, but replaced water pump and flushed the engine. Was getting strong water flow (ran it a hour or so on the lake) and all of a sudden I get a weak stream of water at the dock and it starts to run hot again at idle. Pulled the foot again and...
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    50 Hp Johnson Running Wild ('85)

    I had some ignition problems and put on a new power power pack. After I replaced it I ran the boat of the lake to test it for about 20 minutes and it ran fine. I gradually gave it more power to WOT and it stuck there, could not get it to de-power. I thought it was a broken throttle cable but it...
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    50 hp Overheat, Need expert advice.

    1985 50hp. No problem at idle. (140-150). Overheat alarm goes off around 3000 rpm after a few minutes (on lake). Temperature at the top of the head 170-180 (infrared) Have replaced water pump (twice), themostat (tested), head gasket (good compression). Have pressure flushed engine from the w/p...
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    Johnson 50 Temp Question

    Does anyone know at what temperature the warning switch closes on a 1985 50 hp Johnson ?
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    50 HP Johnson high speed issues

    My 85 50hp Johnson loses power momentarily above 1/2 throttle. It is as if it loses a cylinder for about two seconds then surges back and runs correctly. I have rebuilt carbs/fuel pump etc. Engine cranks, idles, accelerates and runs smoothly. I believe this is electrical since it seems to be...
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    85 Johnson 50 running hot

    My 50 hp gets hot when pushed above 50% throttle. New impeller, new thermostat, plugs are correct. Warning buzzer will quit after a minute when it is idled back. What next ?
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