A special tool is necessary for this procedure.
- Make sure the ignition switch is in the OFF position.
- Disconnect the battery ground.
- Remove the fuel filler cap.
- Using EFI Pressure Gauge T80L-9974-A, or equivalent, at the fuel pressure relief valve (located in the fuel line in the upper right corner of the engine compartment) relieve the fuel system pressure. A valve cap must first be removed to gain access to the pressure relief valve.