On the newer cars there is a fuel drain back valve for the return line. Next time it happens. Turn the ket to run let the pump prime turn key off. Key back to run let prime turn key off turn key back to run let prime if ot fires up after the third time then the pumps slowly dying. And you need to wait at least 5 seconds between cycles so the pump will cycle on. And for those of you who think i am full of it on this one what I have said came from the mouth of a 20+ year ase tech that works on my gp when i can't fix it
