Fuel Injector: Service and Repair

Fuel Pump Fuse:

REMOVAL
1. Remove fuel pump fuse (located in the relay box behind the battery.)
2. Start the engine. Turn the ignition to the start position for approximately 15 seconds after it stalls (this will release the fuel pressure).
3. Remove or disconnect the following items:
^Fuel hoses
^Fuel pressure regulator
^Fuel injector connectors
NOTE: Make a note or sketch of the position of injector terminals in relation to where the wiring harness was situated. This will aid in reassembly.

Fuel Injector Layout:

4. Remove the fuel injectors with the fuel rail intact.
WARNING: Do not place the injector or fuel rail in a vise, this may cause irreparable damage.
5. Remove the injectors from the rail, by removing the retainers and pushing on the tail piece. Do not pull on the connector.

INSTALLATION
1. Clean all fittings with a suitable cleaning fluid and dry using air pressure.
2. Re-install injectors with new o-rings and reinstall retainers. Torque the bolts to 1.7 - 2.0 ft.lbs (2.3 - 2.6 N-m / 0.23 - 0.27 kg-m).
NOTE: Use only unleaded fuel to lubricate fittings.
3. Install new insulators.
4. Reinstall fuel rail and torque the bolts to 12 - 14 ft.lbs (16 - 19 N-m / 1.6 - 1.9 kg-m).
5. Reinstall or connect the following:
^Fuel hoses
^Fuel pressure regulator
^Fuel injector connectors
6. Reinstall the fuel pump fuse.
7. Start and operate the engine and check for fuel leaks.