OEM 2002 Toyota Highlander Fuel Injector

2002 Toyota Highlander Fuel Injector Parts Q&A

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

  A: The first step to change the fuel injector assembly includes preventing gasoline spills. Start by removing the air cleaner cap together with the attached air cleaner hose before you set apart the fuel tube sub-assembly. During removal of the fuel delivery pipe with its integrated injectors proceed with caution to prevent dropping of the injectors. Detach the 4 injector connectors while removing 2 clamps and wire harness from the delivery pipe followed by unscrewing 2 bolts to remove the delivery pipe combined with the 4 injectors. You should also remove both spacers which are installed on the cylinder head. Extract the 4 injectors from the delivery pipe. New insulators need to be installed on every injector before applying spindle oil or gasoline to the new O-rings and adding light coatings of spindle oil or gasoline to the O-ring contact area of the delivery pipe. Install each injector into the delivery pipes after rotating them clockwise and counterclockwise while maintaining the O-rings from twisting. Perform a smooth operation test on the injectors following installation but reinstall every non-turning injector with a fresh O-ring. Position the injector connectors downward. To ensure proper installation of the fuel delivery pipe fitted with injectors start by placing the 2 spacers on the cylinder head and then position the delivery pipe with 4 installed injectors while temporarily securing it with 2 bolts; visually inspect the injector rotation before moving forward to ensure an incorrect O-ring replacement if necessary. Secure the injector connectors in an outward direction while you torque the delivery pipe to the cylinder head bolts to 20 N.m (204 kgf.cm, 15 ft.lbf). Look for any fuel leak signs before completing the operation.