Re: oil coming out of exhaust
It means you have it set rich at idle. Those are your idle relief ports, when the motor is in the water at idle there is'nt enough exhaust pressure to force exhaust through the prop, so thats where it comes out at. The oil is just whats left that did'nt burn. You probably foul plugs pretty often, and may have a little rough idle because of all the oil. You could lean the carbs a little bit by rotating the idle screw a hair clockwise, but thats risky as far as knocking them out of whack. Just make sure your running the oil fuel mixture at 50:1 and keep on boating.