A service or repair of the Fuel Rail starts with removing fuel pressure from the system by using the fuel line quick-connect separator (J 37088-A). Proper sanitation can be achieved by using caps and plugs to seal off the fittings and prevent outside materials from entering. Clean up the Fuel Rail assembly before removing the fuel feed pipe and return hose along with
Fuel Injector coil wires the vacuum tube to the
Fuel Pressure Regulator and
MAP Sensor electrical connection cable and vacuum line to the vacuum switch and finally detach the vacuum air from the
Intake Manifold. Before proceeding with the Fuel Rail bolt removal step the technician must first disconnect the Fuel Injector electrical connectors and harness fasteners. Use equal pressure to carefully pull out the Fuel Rail from the Intake Manifold before extracting the front Fuel Injector retaining clips and injectors. Installation requires replacing all components' o-rings followed by applying clean engine oil to them before setting the Fuel Rail assembly onto the Intake Manifold without front fuel injectors. The front fuel injectors require manual seating after reinstalling them along with their retaining clips. Fasten the Fuel Rail hold-down bolts at 10 n.m (89 lb in) then rejoin all Fuel Injector harness fasteners and electrical connector cables. Reinstall the vacuum source with all related lines along with fuel feed and return pipes and the MAP Sensor electrical connector and the Fuel Injector coil wires. The negative
Battery Cable gets reattached and a leak check needs to be conducted by executing the specified ignition procedures.