I have a 1990 90 hp force runs realy bad . i ran it on the lake one day ran good pulled up to the dock and it would'nt start again I found # 3 piston burn't 100% leakage removed head all 3 burnt replace all . now i have 130 psi on all 3 and vary little cyl leakage have great spark cranking timing at 28 at wot , it starts and dies .choke it and it pops stop choke manually throttle it half way some times it will run and run well , and idle i adjust the carbs it will idle good then die wont start again choke it and it pops runs a little smoke really badly and back fires and dies. carbs rebuild the replaced with good running ones it also has a new stator coils flywheel and plugs . fuel pressure is 4-5 psi i tried removing vapor recovery hose changing fuel vent on tank i spayed choke spray all over looking for a vacume leak and it didnt change anything. any help would be greatly appricated.
I didnt replace the crank seals does anyone know how to test them. thinking back the first time out this summer boat died and wouldnt restart let it sit 2 weeks with plugs and carbs of rebuild carbs and it ran good had it in water for 10 min then wouldnt restart thats when i found the bad pistons
I didnt replace the crank seals does anyone know how to test them. thinking back the first time out this summer boat died and wouldnt restart let it sit 2 weeks with plugs and carbs of rebuild carbs and it ran good had it in water for 10 min then wouldnt restart thats when i found the bad pistons
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