Diesel Data: Automotive Repair

Fuel Injector: Service and Repair

REMOVAL




1. Disconnect the negative battery cable.
2. Remove the engine cover.
3. Remove the wiring harness cover retaining screw, and then remove the wiring harness cover (1).
4. Release the fuel pressure through the fuel rail service valve (7) using a fuel pressure tester. Collect the fuel in a suitable container.
5. Disconnect the fuel feed line (3).
6. Remove the fuel injector wire harness connector retaining clips and then disconnect the fuel injector harness (6) from the fuel injectors (4).
7. Remove the fuel rail retaining bolts (8).
8. Remove the fuel rail (2) with the fuel injectors (4) by moving the fuel rail (2) side to side while lifting upward.
9. Remove the fuel injector retaining clips and the fuel injectors (4) from the fuel rail (2).

INSTALLATION




1. Install the fuel injectors (4) to the fuel rail (2) by gently pushing the fuel injector into the fuel rail (2). Install the retaining clips.
2. Install the fuel rail (2) with the fuel injectors (4) by moving the fuel rail (2) side to side and pushing downward towards the intake manifold.
3. Install the fuel rail retaining bolts. Tighten to 9 N.m (80 in. lbs.).
4. Install the fuel injector harness (6) to the fuel injectors (4) then install the fuel injector electrical connector retaining clips (5).
5. Connect the fuel feed line (3). Tighten to 38 N.m (28 ft. lbs.).
6. Install the wiring harness cover (1), then install the wiring harness cover retaining screw.
7. Install the engine cover.
8. Connect the negative battery cable.