DavidW2009
Regular Contributor
I have used a de-carbing method on two of my 2-cycle outboards using Seafoam. The motors ran better after doing this procedure a couple of times. It is suppose to loosen up the carbon in the combustion chamber and piston rings.
I used approx. 8 oz. of seafoam in one gallon of fuel. Ran the engine for 10-15 minutes and shut it off and let it set for 30 minutes or so. Then started it up and ran some more. Then switched back to the normal fuel tank and ran the boat wide open for a while.
Can this same procedure be used on a 4-cycle I/O, or is it different?
I used approx. 8 oz. of seafoam in one gallon of fuel. Ran the engine for 10-15 minutes and shut it off and let it set for 30 minutes or so. Then started it up and ran some more. Then switched back to the normal fuel tank and ran the boat wide open for a while.
Can this same procedure be used on a 4-cycle I/O, or is it different?