Berryman's B12.
Let the engine 'sip' one can (of Berryman's) thru' a vacuum line and, when the can is almost empty, let it glug it so that the engine DOES conk out.
Then let the car sit 'with this glomp of B12' IN the engine, UIM area, etc.) for at least an hour -- or better ...overnight.
Then (the next morning) start the car. The B12 -- given enough time -- turns carbon into a sort of 'powder' (which is why you let it sit overnight!) ...and this then is easily dissipated out the exhaust. Net result -- your UIM etc. is clear of carbon.
For 'continual' protection -- put a can of either Seafoam or B12 in the gas tank 'every other fillup'.
For super duper anti-carbon-protection -- use Lucas 'gas additive' (in translucent plastic bottles).
Gerry
