re: Car repair question

Check fuel cap light come on when you leave a fuel cap loose or you have a malfunction in your evaporative emissions system (Evap. pump, busted evap line, etc.). This should not prevent it from starting and also is not tied to the fuel pump in any way. I think it not starting is a total coincidence and not related to the fuel cap light, I've been wrong before though.. Post what codes he pulls with the scanner and let the OB consult you on the problem