Fuel Injector: Service and Repair

Installing Fuel Rail:

Always relieve fuel system pressure prior to disconnecting fuel lines or removing any fuel system component.
1. Release fuel pressure to zero.
2. Disconnect injector harness electrical connectors.
3. Disconnect vacuum hose from pressure regulator.
4. Disconnect fuel hoses from fuel tube assembly.
5. Remove injectors with fuel tube assembly.
6. Push out any malfunctioning injector from fuel tube assembly. Do not extract injector by pinching connector.
7. Reverse procedure to install, noting the following:
a. Always replace O-rings and insulators, then lubricate O-rings with silicone oil.
b. Install injectors with fuel tube assembly to intake manifold.
c. Torque bolts in two steps in sequence shown, Fig. 219. 7-8 ft. lbs., then 15-20 ft. lbs.
d. After properly connecting fuel hose to injector and tube assembly, check connection for leakage.