Pontoon Boat & Deck Boat Forum

While on the Marine Doctor site, a few folks referred to decarbing their motors. This involves, I suppose, removing old carbon deposits from the valves, cyl and other areas that cost a lot to fix. I don't know, and I doubt this has been done to my engine. I believe in taking care of my things that I work hard for, and want to make this 20 year old motor last as long as possible. Repair bills (and I've had many) are still less than making 60 or 72 new boat payments.

Go get you some seafoam at any auto parts store, they sell it in fogging mist and as an additive you can run in the gas all the time.

The other follow instructions on the can, but mostly what your doing is running the engine while spraying the fogging oil in the carbs or intake in the case of FI engines.

You fog it let it sit, then run the fogging oil out the next time out on the water