FUEL RAIL
DESCRIPTION
The fuel rail supplies the necessary fuel to each individual fuel injector and is mounted to the intake manifold.
OPERATION
The fuel pressure regulator is no longer mounted to the fuel rail on any engine. It is now located on the fuel tank mounted fuel pump module. Refer to Fuel Pressure Regulator in the Fuel Delivery System section of this section for information. The fuel rail is not repairable.
REMOVAL
WARNING: Release fuel system pressure before servicing fuel system components. Service vehicles in well ventilated areas and avoid ignition sources. Never smoke while servicing the vehicle. This may result in personal injury or death.
NOTE: Wrap shop towels around hose to catch any gasoline spillage.
1. Release the fuel system pressure.
2. Disconnect the negative battery cable.
3. Disconnect the fuel line from the fuel rail. Refer to the Quick-Connect Fittings in this section.
4. Fuel line removed from the fuel rail.
5. Unlock and disconnect the electrical connectors from the fuel injectors.
6. Remove the wiring harness from the fuel rail studs.
7. Remove the 2 bolts from the fuel rail.
8. Remove the fuel rail and injectors from the intake manifold.
9. Fuel rail removed from intake manifold.
10. Remove fuel injectors from fuel rail.
INSTALLATION
1. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each injector.
2. Install the fuel injectors to the fuel rail.
3. Install injector into cup of fuel rail.
4. Install retaining clip and check to ensure injector is properly captured.
5. Insert fuel injector nozzles into openings in intake manifold. Seat the injectors in place.
6. Install the 2 bolts to the fuel rail. Tighten fuel rail bolts to 27 N·m (20 ft. lbs.).
7. Install the wiring harness to the fuel rail.
8. Connect and lock the electrical connectors to the fuel injectors.
9. Connect the fuel line to the fuel rail. Refer to Quick Connect Fittings in this section.
10. Connect the negative battery cable.
11. Use the Scan Tool Fuel System Test to pressurize the fuel system. Check for leaks.