"We live in the tropics and ha
"We live in the tropics and have a 3 year old volvo penta EFI gas engine (GXI model), low hours, with sterndrive in a 28 foot sportscruiser. Since purchase 1 year ago there has been an intermittent (now constant) problem of not revving above 3000-3500 RPM when the boat is under load or when engine has been running for more than 10 minutes. Engine runs smoothly, not obviously fuel contamination. Any suggestions?"
"We live in the tropics and have a 3 year old volvo penta EFI gas engine (GXI model), low hours, with sterndrive in a 28 foot sportscruiser. Since purchase 1 year ago there has been an intermittent (now constant) problem of not revving above 3000-3500 RPM when the boat is under load or when engine has been running for more than 10 minutes. Engine runs smoothly, not obviously fuel contamination. Any suggestions?"