Fuel Injector: Service and Repair

1. Release fuel pressure to zero.




2. Remove injector tube assembly with injectors from intake manifold.
3. Remove injectors from injector tube assembly.
- Push injector tail piece.
- Do not pull on the connector.
4. Install injector to fuel tube assembly.
a. Clean exterior of injector tail piece.
b. Use new O-rings.

Always replace O-rings with new ones.
Lubricate O-rings with a smear of engine oil.

5. Install injectors with fuel tube assembly to intake manifold.




Tighten in numerical order shown in the image.
a. First, tighten all bolts to 9.3 to 10.8 Nm (0.95 to 1.1 kg-m, 6.9 to 8.0 ft-lb).
b. Then, tighten all bolts to 21 to 26 Nm (2.1 to 2.7 kg-m, 15 to 20 ft-lb).

6. Install fuel hoses to fuel tube assembly.
7. Reinstall any parts removed in reverse order of removal.

CAUTION: After properly connecting injectors to fuel tube assembly, check connections for fuel leakage.