There's a lot simpler and more effective way to decarbonize an engine. Get it up to running temperature, set the RPM to 1500-1800, and squirt several ounces of water into the intake with something like a Windex sprayer. The steam created when the water hits the cylinders will blast the carbon loose and blow it out the tailpipe.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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