HotTommy - Just bought the boat with the motor on it. Dude said everything is fine. Obviously, he'll be struck by lightening at some point in his life! LOL We are brazen, and try to learn and do the repairs ourselves. Other forums said it should be an easy fix by adjusting the carburetors and idle, but I just don't know what the standard carburetor spec is for turns out after snugging down.
Frank Acampora - The guy that had the boat before us did put the incorrect plugs in. Boat is a 1993 Bayliner Capri w/ a 1994 the Force 150 hp. He put NGK BUHX in, found out it should be the NGK BUHW. It was also smoking a bunch, so we think he put in standard 2 stroke oil, instead of Marine grade. There is no RMP tachs on the boat, so we'll have to try your clunk theory. I can't find the video at the top of the forum. Do you have a pic of where the idle stop screw is?