Rough idle problem

[96SuperDuperDuty]

Ever since I've had this 96 F250 PSD there has been a problem with a lope in the idle. It's not terribly bad but I know the truck doesn't run quite right. I finally got my autoenginuity setup and ran a buzz test and a cylinder contribution test - Both passed. I check the high pressure oil and it's right around 435psi @ 670ish rpm's. Isn't that a little low? From a quick search I read that the pressure should be 500-600psi. Thanks in advance for the help!

[pjwoolw]

You may want to pull the IPR and throw new o rings on it. You could also record the performance of the HPOP through the RPM range with your AE. What did the fuel filter look like last time you changed it?

[rorybellows]

ya whats yer fuel filter lookin like. if its black its time to change
or cruudy fuel
or