Best way to remove carbon from cylinder

[sunruh]

Originally Posted By: Mackelroy
leaded race fuel, eats carbon like crazy


as we both know...its the cleaner burning of a better fuel (along with the lead) that does this. pump swill is ..... well refiners dumping ground.

 

[Cujet]

Lycoming aircraft engines have an approved procedure where walnut hulls are blasted in the combustion chamber. I have never done the treatment, but I suspect it's done through the spark plug hole, and drained from the lower spark plug hole, or open exhaust valve.

 

[Robenstein]

Chevrolet once used Bon Ami household cleanser in a procedure to seat the rings on small blocks by running it through the intake, doesn't mean it doesnt make me cringe a little thinking about what that did if it got any debris into the lower parts of the engines.

 

[sunruh]

i've done the AJAX treatment to a big CAT diesel.
it really bogs down...if you dare touch the throttle (at max) be prepared for a complete tear down.