Low/unusual fuel pressure

[Kraze]

So I recently got a fuel pressure gauge and hooked it up to the schrader valve, and I've come up with some not so normal readings.

I get around 24-25 psi at idle with vacuum, about 31-32 psi without. Here's what I thought was weird though: when I turn the car off, the pressure slowly climbs to about 32 psi. I thought it would vent the pressure off slowly if anything, not climb.

I haven't got a chance to test the pressure under load yet, I'm waiting for the correct fittings to come in.

Would a weak fuel pump cause low fuel pressure at idle? Or should I be looking somewhere else? And any ideas on the fuel pressure rising after the car is shut off?

 

[Goddard-MarkVIII]

I'd be interested to see what it is under load...make sure you post your results I'm about to run the same test on my mark.

 

[Frat-man-du]

Is this with a new fuel filter?

 

[Kraze]

Fuel filter was replaced about 12k miles ago. I doubt that's the problem, but it will be getting replaced soon anyways just to be sure.

 

[Goddard-MarkVIII]

Aren't you suppose to replace them every 10k?

 

[Kraze]

Most people do them every 30k or so.