I have a 1986 volvo-penta aq125. I don't know if its an a or b.<br /><br />I have a rebuilt carb, new plugs, points, rotor condenser, coil. All the compression is 165-170.<br /><br />It runs great up to 2400 rpms under load with one person in it, and it just wont go any faster. I am probably...