dropped Fuel Pressure?

I installed a Aeromotive fuel regulater, with gauge, as well as a Walbro 255HP, and a fuel pump rewire, and i was wondering... When the car is off after running, the car slowly looses fuel pressure, after about an 25ish min, its back to 0 psi... and when i start the car, it has to crank a little before starting, is this normal for a aeromotive FPR? walbro255hp? there are no noticible fuel leaks... just concerning me. any help?

fuel pressure usually goes down after your car sits for a while. As long as its on an instant thing I wouldnt worry about it

it goes down, but there should always be a decent amount of pressure there. There is a problem, i just can't think of it.

Leaking injector/s is about the only thing that it could be unless you somehow got a bad regulator

when i got the regulator, the 1/8th pt hole (where the gauge screws in) it needed to be rethreaded... could that be the problem? i also used Teflon (s/p) tape on the threading for the gauge... pressure Drops tremendiously slow... but it drops all the way to 0 on the gauge... but the car runs FINE! it just takes a second or to for it to start when its cold (fuel pressure settled @ 0)

Leaking injector/s is about the only thing that it could be unless you somehow got a bad regulator

If he had leaking injectors then wouldn't the car start easily after sitting for a while just because theres already fuel in the cylinder? Idk I'm just curious if this is possible.

Probably but what I listed are possible causes for fuel pressure drop. I guess it might not strat right away since gas doesnt burn in a liquid state

hmm... so what do you sugest i do?

do a leak down test if you can but I would probably just live with it

i'll just live with it... it only takes a secont or two to start... so... EH... thanks guys!

hey man my car does the same thing i just installed a walbro 255 and a sard racing FPR...