A1000 fuel pressure after shut down.


I am completing my ChevyII hybrid, and it runs:biggrin: . I put an A1000 fuel pump on it. The fuel pressure comes right up when I turn the key on and it runs fine with the base pressure set at 36 vac line on and 40 vac line off. My question is why does the mechanical fuel pressure guage go right to zero when I turn off the car? Does the A1000 pump not have a one way valve in it like the other in-tank pumps I have used thus allowing the pressure to drop? Thanks
If/when you do add a check.. It must go after the pump. DO NOT attempt to draw thu the check... Per Brett Clow/Aeromotive tech. BTDT, and had to change it.