Fuel pressure questions

MYSTICSVT

Founding Member
May 16, 2001
349
0
16
Meridian, Idaho
I just got done putting in a Walbro 255 lph fuel pump and a rail mounted fuel pressure gauge.

What's the fuel pressure supposed to be, and how do I check it?

The reading's I have now are 33-34 psi while idleing, and 39-40 psi while idleing with the vacuum line removed from the regulator and plugged. Am I doing it right and how are my readings? :shrug: