Impala V6-3.9L (2007)
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Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.
Replace any damaged lower injector O-rings that were removed.
6. Lubricate the lower injector O-rings with clean engine oil.
7. Install the fuel rail assembly into the intake manifold. Tilt the fuel rail assembly slightly to install the injectors.
Notice: Refer to Fastener Notice.
8. Install the fuel rail bolts.
Tighten the bolts to 10 N.m (89 lb in).
9. Connect the CMP sensor electrical connector.
10. Disconnect the ECT sensor electrical connector.
11. Position the fuel injector harness connector bracket to the intake manifold.
12. Install the fuel injector harness connector bracket bolt.
Tighten the bolt to 8 N.m (71 lb in).
13. Install the upper intake manifold.
14. Connect any remaining electrical connectors.
15. Connect the fuel feed pipe to the fuel rail.
16. Connect the negative battery cable.
17. Inspect for fuel leaks with the following procedure:
1. Turn ON the ignition for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition.
4. Inspect for fuel leaks.
