How to remove carbon from a piston?

Either that, or a wire wheel sort of affair. Carb cleaner does some pretty good work at disolving it as well.

 

soaking in atf and wire brush.

 

I know this may not help you now Dan, but I recall reading that water could be dribbled down the carb to remove carbon deposits.

I think it said to take about a tablespoon of water and slowly drip it into the carb while the engine was running. This was supposed to loosen the deposits in the combustion chamber and shoot them out the exhaust. Does anyone know if this is true?

 

Get a soda bottle (10-20). Fill with cold water. Start engine and let it warm up. Take air cleaner off. Put hand on throttle. Raise rpm of engine to 1/4 or 1/3 speed. As you slowly raise rpm, start to dribble water into carb. Don't dump, just drizzle. As engine starts to stall out, increase throttle up to about 1/2. Let engine race up and idle back and repeat procedure. Watch what comes out of tail pipe. You're forcing the engine to run on the water.

What the water does is force the combustion chamber to cool down, which cleans the carbon off the valves and the piston tops and blows out the impurities.

Pete

 

Brass brush on a dremel or drill Dan.
The water works good, I have used this trick for years, the trick is to not do it to long without stopping for a few moments as it washes the cylinder walls of oil while its doing it.

 

used wire wheel when i had the :v6: apart.

 

bead blast, but you'd have to pay someone to do it.