I purchased a 1984 Bayliner with an 85hp Force out of the U.S. 2 years ago and it's been excellent until this year.
I took it out this spring and found that although everything seemed fine at idle and slow speeds I lost power at higher RPM's.
My boat tech changed out the head gasket (very slight leakage), checked compression (all 3 cylinders in good shape), checked the coils and everything electrical related, changed all fuel lines and installed a fuel pump kit. Nothing resolved the problem.
My tech finally realized that the needle and seat assembly that normally has a tolerance of .078 was reduced to less than .060 causing the engine to run out of fuel at WOT. This was caused by the alcohol in our Canadian fuel causing the neoprene in the seats to swell up.
The carbs that are on my boat have the press-in needle and seat assembly. This assembly is very difficult to acquire and apparently difficult to replace according to my tech.
So now I'm looking for 3 carbs to fit this motor (that have the screw-in style needle and seat assembly) or any suggestions from you guys that I can pass on to my tech as to how to resolve this problem.
Please help. The summer is getting away from me and I can't enjoy my boat.
I took it out this spring and found that although everything seemed fine at idle and slow speeds I lost power at higher RPM's.
My boat tech changed out the head gasket (very slight leakage), checked compression (all 3 cylinders in good shape), checked the coils and everything electrical related, changed all fuel lines and installed a fuel pump kit. Nothing resolved the problem.
My tech finally realized that the needle and seat assembly that normally has a tolerance of .078 was reduced to less than .060 causing the engine to run out of fuel at WOT. This was caused by the alcohol in our Canadian fuel causing the neoprene in the seats to swell up.
The carbs that are on my boat have the press-in needle and seat assembly. This assembly is very difficult to acquire and apparently difficult to replace according to my tech.
So now I'm looking for 3 carbs to fit this motor (that have the screw-in style needle and seat assembly) or any suggestions from you guys that I can pass on to my tech as to how to resolve this problem.
Please help. The summer is getting away from me and I can't enjoy my boat.