Fuel Injector - Installation

4.0L





NOTE: Inspect each O-ring seal on all the fuel injectors, replace O-ring seals if any damaged is noted.

1. Lubricate each fuel injector O-ring with a light drop of clean engine oil.




NOTE: If individual fuel injectors are being replaced, return the remaining fuel injectors to the original positions noted during removal.

2. Install the fuel injectors into the fuel rail, attach the retaining clips on the fuel injectors and make sure that each fuel injector is seated properly into the fuel rail.




3. Apply a light coating of clean engine oil to the O-ring on the nozzle end of each fuel injectors.




4. Insert fuel injector nozzles into openings in the cylinder heads. Seat the injectors in place. Install the fuel rail bolts and tighten bolts to 28 Nm (20.5 ft. lbs.)
5. Correctly position and connect the fuel injector electrical harness connectors to the fuel injectors.




CAUTION: Make sure the fuel line quick connector is connected properly. Failure to connect the fuel line correctly may result in a fuel leak at the rail assembly. Fuel leaked onto a hot engine may ignite resulting in damage to the vehicle.

6. Connect the quick connect fuel line (1) to the fuel rail (2).




7. Install upper intake manifold, Intake Manifold - Installation.
8. Connect the negative battery cable, tighten the nut to 5 Nm (45 in. lbs.).
9. Use the scan tool ASD Fuel System Test to pressurize the fuel system. Check for leaks.