Beat me to it! I used to use a Coke bottle full of HOT water dribbled into the carb at about 2,000 RPM- - - -2 or 3 times if necessary. It does a good job of steam cleaning the combustion chambers and puts some nasty gray/black smoke out of 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
Love your enemies and drive 'em nuts!