I have a 1999 Volvo Penta 4.3GL/PWTR (s/n 4110173554) that recently lost acceleration after 1/2 throttle. The engine has 300 hours/one owner and has been serviced every year at the marina we use.
It starts like a champ, accelerates to plane up to about 30MPH / 3,000 rpm at 1/2 throttle. From...