Having an Issue

[Draftkid]

I dont know bro, our pumps are primeing when you first turn the key, we can hear them... its almost like after the car sits for an hour or 2 the system looses its pressure and we have to prime it to get the fuel back to the engine.... gas isnt leaking anywhere. is it possible for the fuell somehow going backwards to the tank??

[meissen]

There's a check valve inside the pump that stops the fuel from returning into the gas tank. One of the more common failures of the pump is that check valve. Having to "prime" it twice is a classic case of that check valve failing. It should prime to ~43 psi and then HOLD pressure. If I remember correctly, it should only go down one or two PSI per hour that it's shut off.