Fuel Pressure Question: Magnaflow Pump

[Silver Bullet]

I have a fuel cell, magnaflow pump EFI 600, -10 lines to the rails and then the regulater (Aeromotive)-two dash 8's in then a -6 return. My question is as soon as I turn the key the pump primes the system to 48psi but as soon as the pump shuts off, the system falls to 0psi in a matter of 3 to 4 seconds. Is this normal for this pump/system? Should it hold Pressure?

My last system was two cartech pumps and a stock fuel tank, this system held pressure for several minutes.

Thanks.

[89notch]

I have this same problem with my aeromotive A1000 regulator and I called aeromotive today amd they said its completly normal. I called ot send it back to have it rebuilt and they told me they do it when they are new and not to worry about it

[Paul408Notch]

Yeah, it's common. The A1000s do it all the time.

[Silver Bullet]

Well it holds a steady pressure when the car is running. I guess the pumps do not have a checkvalve in them to hold the pressure.

[orangedemon331]

I dont think they do, my A1000 did the same thing!!