Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LFW or LFX)

Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LFW or LFX)

Special Tools

EN-49248 - Injector Rail Assembly Remover

For equivalent regional tools, refer to Special Tools (Diagnostic Tools) Special Tools (Diagnostic Tools).

Removal Procedure

1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief Service and Repair.

2. Remove the fuel pipe shield. Refer to Fuel Pipe Shield Replacement (LFW or LFX) Fuel Pipe Shield Replacement (LFW or LFX).

3. Remove the intake manifold. Refer to Intake Manifold Replacement (LF1, LFW or LFX) Intake Manifold Replacement.

4. Remove the fuel feed intermediate pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LFW or LFX) Fuel Feed Intermediate Pipe Replacement (LFW or LFX).

5. Remove the foam insulator from the fuel rails.




6. Cut the plastic tie strap (1).

7. Disconnect the fuel pressure sensor electrical connector (2).

8. Remove the fuel pressure sensor (3).




9. Remove the bank 2 fuel rail fasteners (1).




10. Remove the bank 1 fuel rail fasteners (1) for clearance purposes.




11. Using the EN-49248-4 - hook, raise the fuel rail (1) as an assembly.

12. Once the fuel rail is free, remove the EN-49248 - special tool.




13. Slide the fuel rail (1) toward the front of the engine approximately 1 inch (25.4 mm), in order to clear the center injector bore.

Note: The direct fuel injectors must be rebuilt whenever the injector has been released from the fuel rail or cylinder head.

14. Once the fuel rail is removed, remove the fuel injectors and rebuild them. Refer to Fuel Rail and Injectors Cleaning and Inspection (LF1, LFW or LFX) Fuel Rail and Injectors Cleaning and Inspection (LF1, LFW or LFX).

Installation Procedure




1. Slide the fuel rail (1) toward the rear of the engine approximately 1 inch (25.4 mm), in order to align the center injector bore.





Caution: Refer to Fastener Caution Fastener Caution.

2. Hand tighten the two outer fuel rail fasteners to seat the injectors.

3. Start and hand tighten the remaining fuel rail fasteners.

4. Tighten the fuel rail fasteners in the sequence shown above:

1. First pass 12 Nm (106 lb in).

2. Final pass 23 Nm (17 lb ft).




5. Tighten the fuel pressure sensor (3) to 33 Nm (25 lb ft).

6. Connect the fuel pressure sensor electrical connector (2) and secure it with a new plastic zip tie.

7. Install the fuel feed intermediate pipe. Refer to Fuel Feed Intermediate Pipe Replacement (LFW or LFX) Fuel Feed Intermediate Pipe Replacement (LFW or LFX).

8. Inspect for fuel leaks using the following procedure:

1. Turn ON the ignition, with the engine OFF for 2 seconds.

2. Turn OFF the ignition, for 10 seconds.

3. Turn ON the ignition, with the engine OFF.

4. Inspect for fuel leaks.

9. Install the foam insulator to the fuel rails.

10. Install the intake manifold. Refer to Intake Manifold Replacement (LF1, LFW or LFX) Intake Manifold Replacement.

11. Install the fuel pipe shield. Refer to Fuel Pipe Shield Replacement (LFW or LFX) Fuel Pipe Shield Replacement (LFW or LFX).

12. Install the low side fuel pressure service port cap.

13. Install the fuel tank cap.