Originally Posted by JAMMINKRAZY

Very common when pit stops are being stretched to the very limit. If the tank is dry enough and you wing on it, it will suck a nice big bubble of air into the fuel line. It basically runs the engine out of fuel even though the tank is full, because the line is dry. Solution is to either not push it as far or don't rev it while fueling. Without back pressure due to the lid being open for fueling, it gets much easier for the engine to suck in a big air bubble. There is nothing forcing the fuel into the engine. Usually when the tank is still pretty full(like 1/4 inch of fuel +) during a pit, it is much less common for a flame out due to this. There are plenty of other things like a bad tune or a dying plug, etc... that can cause a flame out after fueling. But the air bubble is pretty common as well.