My 44' Kingscraft has twin 302 V-8's. The port one is fine. The starboard one will rev up to about 3000 rpm at half throttle in neutral. But when I'm out on the water, full throttle only gives me about 2500rpm. Seems like a definite lack of power. Any suggestions?
Does it cough or spit? Does it tend to go to the side opposit the fine engine at WOT? Thet used to have resistors to the bridge that cut the RPM in half. That is why I asked if it is running with the other stright on the water it may be in the tack.
The first thing I would check is the fuel filter then the fuel pump. If the engine is running smoothly then it sounds like it is being starved for fuel.