You should also check the fuel clunk in the fuel tank. A lot of times a crash will cause the clunk to be thrown to the front of the tank and lodged there. When the tank is full the engine will usually run ok, but will quit after a short time when the fuel level drops a little because the clunk can't move to where the fuel is. A crash can also cause the tubing in the tank to get a tear in it where the tubing is connected to the metel tubes in the tank. This will cause bubbles in the fuel line.[8D]