[cdowns]

have you tried taking off the gas cap when this happens? if theres a big woosh of air when removing cap you'vs got the wrong cap

mechanical fuel pumps are far more reliable cheaper and trouble free than electrical ones they also have a lot longer lifespan

as mentioned hot fuellines can easily b the problem // especially those "lazy man" rubber firestarter ones laying on hot enginges an flappin in the breeze of the rad fan