Fuel Injector: Service and Repair

FUEL RAIL

Part 1:

Part 2:

Exploded View

Removal

WARNING:
- Do not smoke or carry lighted tobacco or open flame of any type when working on or near any fuel-related components. Highly flammable mixtures are always present and may be ignited. Failure to follow these instructions can result in personal injury.
- Fuel in the fuel system remains under high pressure even when the engine is not running. Before working on or disconnecting any of the fuel tubes or fuel system components, the fuel system pressure must be relieved. Failure to follow these instructions can result in personal injury.

1. Release the fuel system pressure.
2. Disconnect the battery ground cable.
3. Remove the upper intake manifold.
4. Disconnect the fuel tube quick connect coupling from the fuel rail.
5. Disconnect the engine coolant temperature (ECT) sensor electrical connector.
6. Disconnect the 2 wire harness retainers from the LH side of the LH valve cover stud bolts.
7. Disconnect the 6 fuel injector electrical connectors.
8. Remove the 2 pin-type retainers from the wiring harness cover.
9. Remove the 4 fuel rail bolts.
10. Remove the fuel rail and injectors as an assembly.
11. Remove the 6 fuel injector clips and the 6 fuel injectors.
- Remove and discard the 12 fuel injector O-ring seals.

Installation

1. CAUTION: Use O-ring seals that are made of special fuel-resistant material. The use of ordinary O-rings can cause the fuel system to leak. Do not reuse the O-ring seals.

NOTE: Install new fuel injector O-ring seals and lubricate them with clean engine oil.

Install the 6 fuel injectors and the 6 fuel injector clips into the fuel rail.

2. Install the fuel rail and fuel injectors as an assembly.
3. Install the 4 fuel rail bolts.
- Tighten to 10 Nm (89 lb-in).

4. Install the wiring harness cover and the 2 pin-type retainers.
5. Connect the 6 fuel injector electrical connectors.
6. Connect the 2 wire harness retainers to the LH valve cover stud bolts.
7. Connect the ECT sensor electrical connector.
8. Connect the fuel tube quick connect coupling to the fuel rail.
9. Install the upper intake manifold.
10. Connect the battery ground cable.