Tool Required

J 34730-1A Fuel Pressure Gauge

Notice: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Disconnect the negative battery cable.
2. Relieve fuel system pressure. Refer to Fuel Pressure Relief .
3. Remove the upper intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
4. Remove the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .



5. Remove the injector retainer clip (1) and discard.
6. Remove the fuel injector assembly (3).

Important: When ordering new fuel injectors, be sure to order the correct injector for the application being serviced.

7. Remove the injector O-ring seals (2), (5) from both ends of injector and discard. Save the O-ring backup (4) for use on reassembly.

1. Ensure that the O-ring backup (4) is on the injector before installing the new O-rings (2), (5). Lubricate the new injector O-ring seals with clean engine oil and install on the injector assembly.
2. Install the fuel injector assembly (3) into the fuel rail injector socket with the electrical connector facing outward.
3. Install the new injector retainer clip (1) on the injector fuel rail assembly by sliding the clip into the injector groove as it snaps onto the fuel rail.
4. Install the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .
5. Install the upper intake manifold. Refer to Intake Manifold Replacement in Engine Mechanical.
6. Connect the negative battery cable.
7. Inspect for fuel leaks.

7.1.	Turn the ignition switch ON for 2 seconds.

7.2.	Turn the ignition switch OFF for 10 seconds.

7.3.	Turn the ignition switch ON.

7.4.	Inspect for fuel leaks.