Talk:Unburned hydrocarbon

Running rich
"Any fuel entering a flame will be reacted.": I thought if an engine is "running rich" (see Carburetor) there is more fuel stoichiometrically speaking than air, so there will be fuel "enternig the flame" that can't be burnt because there's no oxygene to oxidize it.--ospalh (talk) 12:20, 9 July 2010 (UTC)