Fuel Injector Feed Pipes Replacement - Left

FUEL INJECTOR FEED PIPES REPLACEMENT - LEFT

REMOVAL PROCEDURE




1. Disconnect the negative battery cable.
2. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac N Fill). Service and Repair
3. Remove the engine cover.
4. Loosen the charged air cooler inlet duct connector to turbocharger clamp (1).

IMPORTANT: After removing the charged air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.

5. Remove the auxiliary generator, if necessary.
6. Remove the glow plug module, if necessary.




7. Disconnect the fuel lines.
8. Remove the fuel line bracket nut.
9. Remove the fuel line bracket from the stud.




10. Disconnect the main engine electrical harness connectors. Lift up on the latches (1) in order to disconnect the connectors.
11. Open the harness clip (2).
12. Remove the main engine electrical harness connectors.




13. Remove the engine harness main electrical connectors bolts.
14. Remove the positive crankcase ventilation (PCV) hose/pipe.




15. Prior to removing the fuel injector pipes, use compressed air to blow any debris from between the injector line and fittings. Wipe the fittings clean of debris.
16. Spray lithium grease, GM P/N 12346293 or equivalent, between the fuel injector line and fittings to assist in containing any debris during removal.
17. Remove the left fuel injector pipes.

NOTE: DO NOT use compressed air to clean debris from the fuel injector inlet after the fuel line is removed. Using compressed air can allow debris to enter the fuel injector inlet and damage the fuel injector.

INSTALLATION PROCEDURE

NOTE: Ensure proper torquing of the fuel injector line. An under-torqued fuel injector line will not seal properly and an over-torqued fuel injector line may damage the fuel injector fitting. An improperly sealed or damaged fuel injector line or fuel injector fitting will cause a fuel leak.




1. Install the fuel injector pipes.

NOTE: Refer to Fastener Notice.

Tighten the fittings to 41 N.m (30 lb ft).

2. After installing the fuel injector pipes, clean the injector pipes and apply sealant GM P/N 97720043, at the fittings to prevent moisture and debris from collecting between the line and fitting.
3. Install the PCV hose/pipe.




4. Install the engine harness main electrical connectors bolts.

Tighten the bolts to 10 N.m (89 lb in).




5. Connect the main engine electrical harness connectors.
6. Push down on the latches (1) in order to connect the connectors.
7. Close the harness clip (2).




8. Install the fuel line bracket from the stud.
9. Install the fuel line bracket nut.

Tighten the nut to 21 N.m (15 lb ft).

10. Connect the fuel lines.




11. Install the glow plug module, if removed.
12. Install the auxiliary generator, if removed.




13. Remove the tape from the turbocharger openings.

IMPORTANT: Lubricate the end of the duct prior to installation.

14. Install the charged air cooler inlet duct connector (4) to the turbocharger.
15. Tighten the charged air cooler inlet duct connector to turbocharger clamp (1).

Tighten the clamp to 6 N.m (53 lb in).

16. Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (Vac N Fill). Service and Repair
17. Connect the negative battery cable.
18. Prime the fuel system. Refer to Fuel System Priming.
19. Start the engine. If the engine stalls, repeat the above step.
20. Once the engine starts, inspect for fuel leaks.
21. Install the engine cover.