i have been having some problems and some funny noises with the motor. i talked to some people and they sead check the power valves so i checked them and they are all pitted and mushroomed out at the bottem so they will not pull out. i also did a comresion test and there was 108 psi in all three cylinders. can any body tell me if having bad power valves will make the motor to pop, raise and lower the rpm when going across the lake.

it also has about 3700 miles on the motor

800+/- on the power valves