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Recent content by Forsete

  1. F

    Motor shake and won't rev up

    Gear oil is checked and replaced. Compression from top 130, 123, 130 psi
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    Motor shake and won't rev up

    My DT65 -98 vibrates and won't rev up. Spark plugs looks normal. I cleaned the fuel filter. I suspect the CDI unit.. Video: Any thoughts?
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    Johnson 120hk -86 bogs down at 4500+ RPMs

    The engine runs fine up to 4000 RPMs but occasionally starts to bog down and up again at 4500 and above. Sometimes I can run in WOT for approx 1 minute w/o issues. This have been done to try and solve it: Changed the primer bulb. Different tank of gas. Rebuilt carbs and blew them with...
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    Johnson 120hk -86 Overheat at WOT

    Got the boat on land and concluded that the control valve is extremely leaky. The internal plastic part is worn out so the inlet water pressure line is never blocked.. meaning that the water pressure pushing the stats in the seat can´t move away at wot, thats probably why the water pressure is...
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    Johnson 120hk -86 Overheat at WOT

    The engine overheat at WOT, both banks go hot (confirmed with temp gun). My water pressure gauge maxes out at 30+PSI at RPM above 5000 so the impeller seem to work fine. I had overheat issue early in this season but I thought I got it solved permanently when I switched side of the diaphragms...
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    Johnson 120hk -86 Overheat at WOT

    The engine overheat at WOT, both banks go hot (confirmed with temp gun). My water pressure gauge maxes out at 30+PSI at RPM above 5000 so the impeller seem to work fine. I had overheat issue early in this season but I thought I got it solved permanently when I switched side of the diaphragms...
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    Johnson V4 120Hp -86 Bogs down/loses power

    I have been using my Johnson now for many trips this summer, it´s been running flawless until few days ago.. On the way home I cruised at 3000rpm for a while and when I started to throttle up it suddenly started hesitating and lost power, it newer reached 4000rpm and just boged down to even...
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