Quote Originally Posted by Moose1am View Post
Try using some sea foam in the gas tank first before you try anything else. It can only help and won't hurt the boat engine any.

If you have any gummy fuel in the carburetor the sea foam will dissolve it hopefully. Sea Foam can be found at most auto parts stores. It costs about $6.00 a can. A can will treat about 12 gallons of gas.

You can also buy Sea Foam in a spray can and use that to spray down the throat of the carburetor.

The engine will smoke for a few minutes and then eventually it will become smoke free as all the unburned carbon is eliminated from the engine.

You also may have a brownish oily substance that comes out of the exhaust of the prop but that's nothing to worry about. Just put something under the prop to keep the floor clean until it stops. This is just the oily residue of the dissolved carbon coming out of the engine's long exhaust port.

If sea foam does not solve the problem then you can have the carburetor rebuilt if that's the problem.

Try the Sea foam first. Sea Foam is mostly NAPTHA which is a very light distillate.
I have heard of the sea foam, this could very well be the problem. I will try this next, can't hurt. Thanks Alot!