1997 Chevy Truck

Tiny
RGS REPAIR INC
  • MEMBER
  • 1997 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
Engine starts fine cold and always runs fine when you get it started. Fuel psi is good. Changed fuel psi regulator valve, all injectors, fuel filter, fuel tank cap, tuned up engine, Only thing that seems to heep is releaving some fuel psi at rail befor trying to start. Let me know if you have any other sujestions Thanks
Thursday, June 10th, 2010 AT 6:58 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Fuel pressure regulator is mechanically controlled by internal spring pressure. Regulator is adjusted at factory and is not serviceable. If fuel pressure is too low, check for restricted delivery line. Also, check fuel pump pressure and volume. If fuel pressure is too high, check for restricted fuel tank return line or fuel filter. If no faults are found and pressure is too high or too low, replace fuel pressure regulator.
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Saturday, June 12th, 2010 AT 12:22 PM

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