Fuel Injector: Service and Repair

1. Release fuel pressure to zero.
2. Remove intake manifold collector. Refer to "TIMING CHAIN".




3. Remove fuel tube assemblies in numerical sequence as shown in the figure at left.
4. Expand and remove clips securing fuel injectors.
5. Extract fuel injectors straight from fuel tubes.
- Be careful not to damage injector nozzles during removal.
- Do not bump or drop fuel injectors.

6. Carefully install O-rings, including the one used with the pressure regulator.
- Lubricate O-rings with a smear of engine oil.
- Be careful not to damage O-rings with service tools, finger nails or clips. Do not expand or twist O-rings.
- Discard old clips; replace with new ones.

7. Position clips in grooves on fuel injectors.
- Make sure that protrusions of fuel injectors are aligned with cutouts of clips after installation.
8. Align protrusions of fuel tubes with those of fuel injectors. Insert fuel injectors straight into fuel tubes.
9. After properly inserting fuel injectors, check to make sure that fuel tube protrusions are engaged with those of fuel injectors, and that flanges of fuel tubes are engaged with clips.




10. Tighten fuel tube assembly mounting nuts in numerical sequence (indicated in the figure at left) and in two stages.

Tightening torque N.m (kg-m, ft-lb)
1st stage: 9.3 - 10.8 (1.0 - 1.1, 6.9 - 7.9)
2nd stage: 20.6 - 26.5 (2.1 - 2.7, 16 - 19)

11. Install all parts removed in reverse order of removal.

CAUTION: After properly connecting fuel tube assembly to injector and fuel hose, check connection for fuel leakage.