OEM 2002 Toyota Tundra Fuel Injector

2002 Toyota Tundra Parts Questions & Experts Answers

• Q: How to Service and Repair a Fuel Injector on 2002 Toyota Tundra?

  A: The fuel injector servicing process starts with unfastening the throttle body cover and intake air connector along with fuel pressure pulsation damper while placing a shop towel below the delivery pipe before easing the pulsation damper. First detach the accelerator cable from engine access and keep the accelerator cable bracket by unfastening its two nuts. Remove the PCV hose from PCV valve then proceed with disconnecting the VSV for EVAP following its connector and hose removal and the accelerator cable clamp and VSV removal from the intake manifold. Start by unbolting the throttle body cover bracket and proceed to detach the engine wires from both the No.1 engine hanger and wire bracket as well as from the 2 wire clamps on engine wire from RH delivery pipe brackets. The delivery pipes and injectors need careful removal starting with a first clamp bolt on the fuel return pipe directed to the LH delivery pipe followed by the bolt and two union bolts and four gaskets and front fuel pipe then 8 injector connectors must be disconnected and the delivery pipes held by four lower intake manifold nuts require removal alongside the two delivery pipes eight output inside five insulators and four spacers and O-ring and grommet removal from each injector unit. Begin the installation process by adding new grommets to each injector then apply gasoline to fresh O-rings before installing them and while turning the injectors drive them into the delivery pipes. First install the 4 spacers then position the new insulators and injector connectors outward and after use the 2 delivery pipes to set the lower intake manifold containing the injector assemblies before temporarily screwing in the 4 nuts. You should install the front fuel pipe by using its bolt, four new gaskets and two union bolts while torquing these elements to 39 N.m (400 kgf.cm, 29 ft.lbf) for union bolts and 7.5 N.m (80 kgf.cm, 66 in.lbf) for the bolt. Connect the clamp bolt that attaches to the delivery pipe on the LH side of the fuel return pipe and fasten it to 7.5 N.m (80 kgf.cm) torque. Verify that the injectors rotate freely before replacing worn O-rings if needed. The installation requires you to tighten all 4 delivery pipe nuts to 18 N.m (185 kgf.cm, 13 ft.lbf) before connecting the 8 injector connectors. After attaching two wire clamps to RH delivery pipe brackets proceed to link them with the No.1 engine hanger and wire bracket. Finally, install the engine wire protector with two bolts. The PCV hose got connected to the PCV valve and the VSV for EVAP received its attachment point on the upper intake manifold through installation of the accelerator cable clamp and VSV while also performing EVAP hose connection and VSV connector installation. Fix the throttle body cover bracket with its bolt before adding the accelerator cable bracket along with 2 nuts that need tightening to 18 N.m (185 kgf.cm, 13 ft.lbf) before you can link the accelerator cable to the engine. Place the fuel pressure pulsation damper as well as the intake air connector and throttle body cover in position.