Boat is a 2556 with 5.7 (600hrs) and Volvo Duo Prop and has run with no mechanical issues for 7 seasons (100hr per) it gets all required PM. It developed a problem last fall. After running for 45min to an hour boat would not accelerate past 3200. I would get a slight pop pop(backfire?)...
Boat is a bayliner 2556 purchased 10/07 engine was surveyed(run tested compression check, all ok) prior to purchase. Logged 10hrs before hauling boat for winter to replace outdrive(this was anticipated prior to purchase, I already had a VP duoprop)
Engine: 1989 350 GM set up to OMC FWC(engine...
