The first step for servicing the fuel rail is to take off the fuel tank filler tube cap and let the fuel system pressure go. You should begin by breaking the negative
Battery Cable and then remove the air tube up top in the
Throttle Body; some models will want air cleaner ducts to be removed as well. For each of the six
Fuel Injectors, push the red slider off to the side and depress the tab so the connector releases, only after making a note of the wiring location when the factory harness is not tagged. If you can reach them, remove the oxygen sensor wiring clip nuts from the fuel rail studs and disconnect the fuel supply line latch clip and the fuel line from the fuel rail as well. Disconnect the
Throttle Cable, speed control cable and automatic transmission cable from the throttle body and take out the cable routing bracket at the
Intake Manifold. Brush or blow away any dirt from around the injectors, remove the fuel rail mounting nuts, then gently treat and shake the rail to help the injectors move from the manifold. If you need to, rinse every injector bore and put a little clean engine oil on every injector O-ring before setting the injectors in the right places. Attach and tighten each of the fuel rail bolts with 11 ± 3 Nm (100 ± 25 in. lbs.) torque and then plug in and lock the electrical connectors at the fuel injectors. Attach the fuel line and the latch clip, put in the protective cap on the pressure test port fitting if it is provided and put the cable routing bracket back in. Repair the throttle cable, speed control cable and automatic transmission cable at its connection on the throttle body and attach the oxygen sensor wiring clip nuts if the engine has one. After that, attach the air tube again, connect the fuel tank cap, connect the negative battery cable, restart the engine and check for fuel leaks.