Fuel Pressure Release: Service and Repair

Fuel Pressure Gauge:

SPECIAL TOOL(S)

RELIEF

Vehicles Without returnless system

WARNING:
^ DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL RELATED COMPONENTS. HIGHLY FLAMMABLE VAPORS ARE ALWAYS PRESENT AND MAY IGNITE. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
^ THE FUEL SYSTEM REMAINS PRESSURIZED FOR A LONG TIME AFTER THE IGNITION IS SWITCHED OFF. THE FUEL PRESSURE MUST BE RELIEVED BEFORE ATTEMPTING ANY REPAIRS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

1. Disconnect the battery ground cable.
2. Remove the air cleaner outlet tube.






3. Remove the Schrader valve cap.






WARNING: MAKE SURE THAT THE TAP IS TURNED FULLY CLOCKWISE BEFORE FITTING THE FUEL PRESSURE GAUGE TO THE SCHRADER VALVE. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

4. Connect the Fuel Pressure Gauge to the Schrader valve.






NOTE: When relieving the fuel pressure, catch any displaced fuel in a suitable container.

5. Turn the tap on the Fuel Pressure Gauge fully counterclockwise to relieve the fuel pressure

6. Remove the Fuel Pressure Gauge and install the Schrader valve cap.

Vehicles with returnless fuel system

WARNING:
^ DO NOT SMOKE OR CARRY LIGHTED TOBACCO OR OPEN FLAME OF ANY TYPE WHEN WORKING ON OR NEAR ANY FUEL RELATED COMPONENTS. HIGHLY FLAMMABLE VAPORS ARE ALWAYS PRESENT AND MAY IGNITE. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
^ THE FUEL SYSTEM REMAINS PRESSURIZED FOR A LONG TIME AFTER THE IGNITION IS SWITCHED OFF. THE FUEL PRESSURE MUST BE RELIEVED BEFORE ATTEMPTING ANY REPAIRS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.

Note: The fuel pump fuse is located in the battery junction box.

7. Remove the fuel pump fuse (No 9).
8. Start the engine and allow to idle until the engine stalls.
9. Crank the engine for approximately five seconds to make sure the fuel injection supply manifold pressure has been relieved.
10. Install the fuel pump fuse into the battery junction box.