1997 Chevy Truck

1997 CHEVROLET TRUCK
150,000 MILES • V8 • 4WD • AUTOMATIC
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RGS REPAIR INC
  • MEMBER
  • 1 POST
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
Jun 9, 2010 at 11:58 PM
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MERLIN2021
  • ✓Experienced 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.
Jun 12, 2010 at 5:22 AM
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