How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Bob Your Own Question
Bob
Bob, Auto Tech
Category: Chevy
Satisfied Customers: 4087
Experience:  Plus 40 years GM, over 30 certified with Chevrolet, ASE certified Master Tech. (Expired, Retired)
2210118
Type Your Chevy Question Here...
Bob is online now
A new question is answered every 9 seconds

how to replace fuel pressure regulator on 2003 chevy ...

Resolved Question:

how to replace fuel pressure regulator on 2003 chevy 2500 HD siverado
Submitted: 9 years ago.
Category: Chevy
Expert:  Bob replied 9 years ago.
Document ID# XXXXX
2003 Chevrolet Chevy K Silverado

 

Fuel Pressure Regulator Replacement

Removal Procedure

Important: Three styles of fuel pressure regulators and fuel rails will be used in this model year. Each regulator has a different "footprint" that consequently changes the size of the receiving port in the fuel rail. The regulator retaining clips are specific to each rail-regulator design and cannot be interchanged.


    Object Number: 350543  Size: SH

  1. Relieve the fuel system pressure.
  2. Remove the fuel pressure regulator vacuum hose.
  3. Clean any dirt from the fuel pressure regulator retainer and surrounding area.
  4. Remove the fuel pressure regulator retainer (8).
  5. Remove the fuel pressure regulator (9).
  6. Ensure none of the following parts are still in the fuel rail.
    - Backup ring (10)
    - Regulator seal O-ring (11)
    - Regulator filter (12)
    - Regulator seal O-ring (13)

Installation Procedure


    Object Number: 820979  Size: SH

  1. Ensure that the NEW fuel pressure regulator retainer is the correct one.
  2. The tabs (1) are used on the straight vacuum port retainer (2), and the E85-straight vacuum port retainer (3).
  3. the angle vacuum port retainer (4) has no tabs.
    Object Number: 350543  Size: SH

  4. Install the following parts onto the fuel pressure regulator (9), if necessary.
    - Backup ring (10)
    - Regulator seal O-ring (11)
    - Regulator filter (12)
    - Regulator seal O-ring (13)
  5. Lubricate the fuel pressure regulator O-rings (11, 13) with clean engine oil.
  6. Install the fuel pressure regulator (9).

    Important: Whenever the fuel pressure regulator is removed from the fuel rail NEW O-rings and a NEW retaining clip should be used on reinstallation.

  7. Install the NEW fuel pressure regulator retainer (8).
  8. Install the fuel pressure regulator vacuum hose .
  9. Install the fuel fill cap.
  10. Connect the negative battery cable.
  11. Use the following procedure in order to inspect for leaks:
    1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    2. Turn the ignition OFF for 10 seconds.
    3. Turn the ignition ON, with the engine OFF.
    4. Inspect for fuel leaks.

Document ID# XXXXX
2003 Chevrolet Chevy K Silverado

Bob and 9 other Chevy Specialists are ready to help you