not getting fuel to pressure valve?

2000 GMC SIERRA
180,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
JEFFERY LORD
  • MEMBER
  • 1 POST
replaced pump assembly an filter but im still not getting fuel to pressure valve
Mar 22, 2010 at 9:34 PM
Advertisement
Avatar
SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

If you have a verified good fuel pump and you can hear it come on. Then the reason not getting enough fuel pressure could be a clog in the line of a faulty fuel pressure regulator.
Overtimes with all the heat and vibration the fuel pressure regulator can go bad. The internals can fail and simply stop fuel from flowing through.

The fuel pressure regulator is located on the fuel rail (see diagram below).
This vehicle should have 55-62 PSI of fuel pressure with the key On and engine Off.

You might find this video helpful on how to check fuel pressure:

https://youtu.be/aITQclp7zIE

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

I have attached diagrams for your reference.

Please let me know of any questions.

Thank you.
Aug 16, 2021 at 10:25 PM