Attention: TDR Forum Junkies 
I'll start at the beginning. I replaced my lift pump back in Feb because pressures were way down. It would idle at 10psi and at WOT I could pull it down to 0.
After replacing the pump I started to see a problem when leaving the truck parked overnight or for more than just a couple hours. I'd come out in the morning and the fuel system had lost its prime, I'd have to bleed the air out of the lines every morning and after leaving it parked at work all day.
I checked for fuel leaks and found none. I replaced all the washer gaskets for good measure and that had no effect. Going back to the old pump it seemed to lose prime the first couple times, but that may have been the dead Carter trying to move very cold fuel, it seems okay now, it builds pressure when I bump the starter and doesn't lose the prime like the new one did.
I'm going to try swapping the new one back in and pay more attention to what happens and when, but my question is this: Is there anything in the workings of the VP that could become "stuck" when introduced to the higher pressures of a good lp and cause the system to lose prime when parked. Could that same part come unstuck when pressures are brought back down so that the old pump doesn't lose prime? Before I go throwing money at a VP without needing to, is there a way to check this stuff out?
Thanks,
Eammon
After replacing the pump I started to see a problem when leaving the truck parked overnight or for more than just a couple hours. I'd come out in the morning and the fuel system had lost its prime, I'd have to bleed the air out of the lines every morning and after leaving it parked at work all day.
I checked for fuel leaks and found none. I replaced all the washer gaskets for good measure and that had no effect. Going back to the old pump it seemed to lose prime the first couple times, but that may have been the dead Carter trying to move very cold fuel, it seems okay now, it builds pressure when I bump the starter and doesn't lose the prime like the new one did.
I'm going to try swapping the new one back in and pay more attention to what happens and when, but my question is this: Is there anything in the workings of the VP that could become "stuck" when introduced to the higher pressures of a good lp and cause the system to lose prime when parked. Could that same part come unstuck when pressures are brought back down so that the old pump doesn't lose prime? Before I go throwing money at a VP without needing to, is there a way to check this stuff out?
Thanks,
Eammon
