Kevin A Wright
Member III
Ok I'm at my wits end and looking for ideas.
I had to replace a broken water flange below the thermostat housing which required pulling the head. While we were at it replaced the valve guides. After buttoning her up, she runs perfectly in neutral and will run right up to 3000 rpm. But once put in gear runs rough and starts blowing huge clouds of black soot at about 1500 rpm.
Pulled the exhaust system to the muffler and checked for obstructions, none. Checked the injectors and one was bad so replaced all three. No change. Had a diver clean the prop and make sure it was clear. No change. Found failed motor mount so shaft was binding a bit. Replaced and realigned. No change. Rechecked valve clearances. No change.
I've run out of ideas. Any thoughts out there on what I should look at?
Kevin Wright
E35 Hydro Therapy
I had to replace a broken water flange below the thermostat housing which required pulling the head. While we were at it replaced the valve guides. After buttoning her up, she runs perfectly in neutral and will run right up to 3000 rpm. But once put in gear runs rough and starts blowing huge clouds of black soot at about 1500 rpm.
Pulled the exhaust system to the muffler and checked for obstructions, none. Checked the injectors and one was bad so replaced all three. No change. Had a diver clean the prop and make sure it was clear. No change. Found failed motor mount so shaft was binding a bit. Replaced and realigned. No change. Rechecked valve clearances. No change.
I've run out of ideas. Any thoughts out there on what I should look at?
Kevin Wright
E35 Hydro Therapy