The plugs were black?? that mofo must of been smoking like a freight train going down threw there..or.... to read plugs you must click it threw the lights then pull them and read them.. if you don['t click it a WOT your reading is null and void. If you drive it back to the pits null and void, idle null and void blah blah blah.
If they were black clicking it threw the lights then pull jets, if they were black after driving it back to the pits, then somebody who knows about carbs needs to help you
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