Fuel Rail: Service and Repair
REMOVAL:1. Disconnect the negative battery cable.
2. Disconnect the cold start injector fuel pipe.
3. Disconnect the vacuum sensing hose from the Fuel Pressure Regulator. Disconnect electrical connectors from injectors.
4. Disconnect the fuel hose from the fuel return pipe.
5. Disconnect the fuel inlet pipe from the Fuel Rail.
Disconnecting Fuel Inlet Pipe From Fuel Rail:
6. Remove the three Fuel Rail mounting bolts.
Removing Fuel Rail:
7. Lift the Fuel Rail with the injectors from the cylinder head.
CAUTION: Be careful that the injectors do not drop from the Fuel Rail. Damage to the injector tip could result.
8. Remove the four insulators and three spacers from the cylinder head.
9. When the Fuel Rail is safely over a workbench, pull the injectors from the Fuel Rail.
INSTALLATION:
1. Install new grommet and O-ring on each removed injector.
Fuel Injector Grommet And O-ring:
2. Apply a light coat of gasoline to the O-ring to ease insertion into the Fuel Rail.
3. With a twisting motion, install each injector into the Fuel Rail until fully seated. Carefully check proper alignment to prevent fuel leaks.
Installing Injector In Fuel Rail:
4. Place four new insulators and three spacers in position on the cylinder head.
Installing Fuel Rail Insulators And Spacers:
5. Carefully install the Fuel Rail with injectors on the cylinder head.
6. Start the three mounting bolts, but do not tighten. Rotate each injector to ensure that there is no binding of the sealing parts.
Installing Fuel Rail With Injectors:
7. If the injectors do not rotate smoothly, recheck the O-rings for correct installation.
Correct Installation Of Fuel Injector In Fuel Rail:
8. Position injector connector sockets facing up.
9. Torque the three mounting bolts to 13 ft.lbs. (17 N-m).
10. Connect the fuel inlet pipe. Torque the union bolt to 22 ft.lbs. (29 N-m).
11. Connect the fuel return hose.
12. Connect injector electrical connectors.
13. Connect vacuum sensing hose to the Fuel Pressure Regulator.
14. Connect cold start injector fuel delivery pipe with two new gaskets. Torque the union bolt to 13 ft.lbs. (18 N-m).
15. Reconnect negative battery cable.
16. Start engine and check for fuel leaks.