Well I suppose I'm not positive but a fuel pump that runs dry has a very distinct sound and considering it doesn't work or prime anymore I am fairly certain that this is whats going on. It's either the circuit to the fuel pump or the pump itself. I will take it apart one day this week and find out.
P.S. Tank was almost full. It was only lap 2 :(
Is the pump getting power? Have you put a meter on it?