So I have a 1990 bayliner with a force 90 outboard. Got the boat for free after my father in law passed and to give a whole history for better advise.
Boat was purchased brand new and they stopped using it in 1995. It was stored and never touched till 2019. I got it running without doing anything but fresh fuel and took it to a mechanic to give it a tune up and new water pump. The shop said it didn’t need a new impeller so stupid me thought ok.
First time out of course it overheated and we had to paddle back to the launch. Changed the impeller myself which I should have done in the first place.
After that we had it out with no real problems I just thought it should have more power. Did’t get to use it last year but this year I took it to another mechanic that works on older boats and took it out last weekend having all the power back and loving it. Got about ten minutes in at wot and the rpm dropped from about 4200-3300 no loud noises just lost rpm. Then started shaking the boat and eventually died in the water. Got it towed back to the launch and at home I replaced the fuel pump diaphragm and got it started with new plugs and cleaned the carbs. The only way to get it running is to have the idle screw all the way in and sometimes starter fluid does the trick. Checked the butterflies synced and all the wiring good. It misses and spits and runs like crap. Still won’t go above 3200rpm at wot either. I need a new bulb for my spark tester so I can’t speak to that right now but any ideas on my next steps? What does it sound like? See video below
Boat was purchased brand new and they stopped using it in 1995. It was stored and never touched till 2019. I got it running without doing anything but fresh fuel and took it to a mechanic to give it a tune up and new water pump. The shop said it didn’t need a new impeller so stupid me thought ok.
First time out of course it overheated and we had to paddle back to the launch. Changed the impeller myself which I should have done in the first place.
After that we had it out with no real problems I just thought it should have more power. Did’t get to use it last year but this year I took it to another mechanic that works on older boats and took it out last weekend having all the power back and loving it. Got about ten minutes in at wot and the rpm dropped from about 4200-3300 no loud noises just lost rpm. Then started shaking the boat and eventually died in the water. Got it towed back to the launch and at home I replaced the fuel pump diaphragm and got it started with new plugs and cleaned the carbs. The only way to get it running is to have the idle screw all the way in and sometimes starter fluid does the trick. Checked the butterflies synced and all the wiring good. It misses and spits and runs like crap. Still won’t go above 3200rpm at wot either. I need a new bulb for my spark tester so I can’t speak to that right now but any ideas on my next steps? What does it sound like? See video below
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