Fuel Rail: Service and Repair

Fuel Injection Fuel Rail Assembly Replacement

Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Sedan,Wagon) Service and RepairBattery Negative Cable Disconnection and Connection (Coupe) Service and Repair.
2. Remove the front and rear intake manifold covers. Refer to Intake Manifold Cover Replacement - Rear Intake Manifold Cover Replacement - Rear.
3. Relieve the fuel system pressure. Refer to Fuel Pressure Relief (Without CH 48027) Service and RepairFuel Pressure Relief (CH 48027) Service and Repair
4. Disconnect the fuel pipe from the fuel rail. Refer to Metal Collar Quick Connect Fitting Service Service and Repair




5. Disconnect the fuel injection Harness connectors (1, 2).
6. Disconnect the BARO sensor harness connector (5).
7. Disconnect the intake temperature sensor harness connector (4).
8. Disconnect the supercharger air outlet pressure sensor harness connector (3).
9. Disconnect the mass airflow sensor electrical connector.
10. Disconnect the engine harness retainers at the fuel rail.




11. Disconnect all 8 ignition coil harness connectors (1).




12. Remove the front fuel rail fastener.
13. Remove the fuel rail ball stud fasteners (1).
14. Carefully disengage the fuel injectors from the supercharger.
15. Remove the fuel rail wit the fuel injector harness from the engine.




16. Remove the fuel injection wiring harness (1, 2) from the fuel rail and fuel injectors.
17. If replacing the fuel rail of an injector. Refer to Fuel Injector Replacement Removal and Replacement.

Installation Procedure

1. Install the fuel injectors if removed. Refer to Fuel Injector Replacement Removal and Replacement.




2. Install the fuel injection wiring harness (1, 2) to the fuel rail and fuel injectors.




3. install the fuel rail wit the fuel injector harness (2) to the engine.
4. Carefully locate the fuel injectors into the supercharger. Install the left side first and then the right side.
5. Apply threadlock to the ball stud and fastener threads. Refer to Adhesives, Fluids, Lubricants, and Sealers Adhesives, Fluids, Lubricants, and Sealers.

Caution: Refer to Fastener Caution Fastener Caution.

6. Instal the ball studs (1) and the forward fastener and tighten to 10 Nm (89 lb in).




7. Connect all 8 ignition coil harness connectors (1).




8. Connect the engine harness retainers at the fuel rail.
9. Connect the mass airflow sensor electrical connector.
10. Connect the fuel injection Harness connectors (1, 2).
11. Connect the barometric pressure sensor harness connector (5).
12. Connect the supercharger air output sensor harness connector (3).
13. Connect the intake temperature sensor harness connector (4).
14. Connect the fuel pipe to the fuel rail. Refer to Metal Collar Quick Connect Fitting Service Service and Repair
15. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (Sedan,Wagon) Service and RepairBattery Negative Cable Disconnection and Connection (Coupe) Service and Repair.
16. Pressure the fuel system and check for fuel leaks.
17. Install the front and rear intake manifold covers. Refer to Intake Manifold Cover Replacement - Rear Intake Manifold Cover Replacement - Rear.