Volvo Penta 3.0GLP wont go over 3000 RPM or 10 mpg at full throttle, after about 5 minutes full throttle it starts to pick up speed and drive normal. I then pull back on throttle and RPMs seem fine. when I stop it does it again. I have checked throttle body, fuel filter was replaced, Gas additive and fuel system cleaner added to tank along with fresh gas. haven't checked spark plugs yet. I guess my question is.... what are the situations that can cause these symptoms?
Join in and write your own page! It's easy to do. How? Simply click here to return to Volvo Penta Forum.