Prior to servicing the fuel rail system it is essential to follow safety protocols regarding its highly flammable content since this prevents personal injury. Start the procedure by disconnecting the battery ground cable followed by air cleaner removal and intake pipe extraction. Remove the quick connect fitting of evaporative emission
Canister Purge Valve and the heated positive crankcase ventilation valve electrical connector together with PCV hose from
Intake Manifold. The next step of the repair involves disconnecting four pieces: the electronic throttle control connector with the
Throttle Position Sensor electrical connector and the vacuum hose at the rear of the valve cover and the pressure temperature sensor electrical connector alongside the FRPT sensor vacuum hose. Detach all eight
Fuel Injector electrical connectors and spring lock couplings from the fuel rail before removing its four bolts which need to be tightened to 89 lb-in (10 Nm) during reinstallation. Every fuel injector should be tightly secured in its injector cup before adding clean engine oil to the new O-ring seals. The complete removal of fuel rail and injectors should be done together as one unit whereas new fuel rail installations require removal of the two FRPT bolts and FRPT sensor followed by torquing them to 4 Nm (35 lb-in). Some check the O-ring seal condition before deciding if replacement is needed. After that the reverse procedure allows the work to finish.