7.3 fuel psi

01 blue 7.3 · Jan 4, 2012

I put in a fuel psi gauge and hooked it in on the fuel filter bowl, running about 65 psi all the time. Is that normal?

4duggan · Jan 4, 2012

Thats what my regulator is set at .

01 blue 7.3 · Jan 4, 2012

I don't think there is any adjustment to my set up. I got my gauges through glow shift. I just wasn't sure what the normal fuel psi should be.

Blowby · Jan 4, 2012

Most 7.3's running regulated return's are between 60-70 psi. So your GTG.

David N · Jan 4, 2012

Blowby said:
Most 7.3's running regulated return's are between 60-70 psi. So your GTG.

Yup. Thats what mine is set at.

silverpsd_06 · Jan 4, 2012

Your good... With the stiffer spring in the regulator mine saw upwards of 95-100 psi:shocked:

Arisley · Jan 5, 2012

No reason to go over 60 to 70. I did the stiffer spring once. Truck ran worse at higher pressure.

silverpsd_06 · Jan 5, 2012

ya that was not a recommendation of any sort.. young and dumb

superduty4x4 · Jan 5, 2012

Arisley said:
No reason to go over 60 to 70. I did the stiffer spring once. Truck ran worse at higher pressure.

My OBS on a stock fuel system will run 70-100psi fuel pressure. The fuel bowl has been fully rebuilt, regulator isn't plugged up, my gauge and sending unit are good... I don't get it. I have thought about cutting a coil or two off the FPR spring to drop the pressure but my truck runs pretty darn good so I haven't messed with it.