I agree with Cuda, that was the most common problem with flooding one of these. If I remember correctly, the pressure regulator is on the driver's side at the rear of the fuel runner. The allen head screws come in from the bottom, so if you have a bit set and a ratchet wrench, that is the easiest way to change it out. May sure your "O" rings are lubed when you reinstall the new regulator, so as not to pinch them .