Before servicing the fuel rail in a 2.7L engine, first release all fuel system pressure, use the vehicle in fresh air and keep away from any ignition sources or cigarette smoke. Unplug the negative cable from the battery, remove the
Intake Manifold plenum and cover the intake manifold with something so particles won't reach the engine. Then, separate the fuel supply tube quick connect fitting from the fuel rail at the back and disconnect the electrical plug from each
Fuel Injector by pushing the red slider away and, while pressed, depressing the tab to pull free. The factory wiring harness is tagged with association to the injector position. If that tag is missing, be sure to remember the injector's existing wiring spot before removing it. Lift up the fuel rail by undoing the bolts on each end and lifting the rail straight out of the fuel rail holes. Remember to take out the retaining clips from the fuel injectors at the fuel rail and take the injectors out of the fuel rail after that.