Fuel Pressure Release: Service and Repair

Fuel Pressure Regulator Location:

Fuel Pressure Release Procedure - Typical:

NOTE:

The fuel system is under constant fuel pressure (even with the engine off).

WARNING: BECAUSE THE FUEL SYSTEM IS UNDER CONSTANT FUEL PRESSURE, THIS PRESSURE MUST BE RELEASED BEFORE SERVICING ANY FUEL SUPPLY OR FUEL RETURN SYSTEM COMPONENT.

PROCEDURE

1. Disconnect negative battery cable.

2. Remove fuel tank filler neck cap to release fuel tank pressure.

3. Remove protective cap from pressure test port on the fuel rail.

WARNING: DO NOT ALLOW FUEL TO SPILL ONTO THE ENGINE INTAKE OR EXHAUST MANIFOLDS. PLACE SHOP TOWELS UNDER AND AROUND THE PRESSURE PORT TO ABSORB FUEL WHEN THE PRESSURE IS RELEASED FROM THE FUEL RAIL.

WARNING: WEAR PROPER EYE PROTECTION WHEN RELEASING FUEL SYSTEM PRESSURE.


4. Obtain the fuel pressure gauge/hose assembly from fuel pressure gauge tool set 5069. Remove the gauge from the hose.

5. Place one end of hose (gauge end) into an approved gasoline container.

6. Place a shop towel under the test port.

7. To release fuel pressure, screw the other end of hose onto the fuel pressure test port.

8. After fuel pressure has been released, remove the hose from the test port.

9. Install protective cap to fuel test port.