I am posting this for informational purposes only.
I own a 1984 Bayliner with an 85hp Force.
This spring I had the same problem a lot of people seem to be experiencing in that the motor started and idled properly but had no power at high RPM.
After changing everything (plugs, fuel lines...
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...