OEM 2003 Toyota Avalon Fuel Injector

2003 Toyota Avalon Fuel Injector Parts Questions & Experts Answers

• Q: How to service and repair fuel injectors on 2003 Toyota Avalon?

  A: The fuel injector servicing process starts with removing the V-bank cover through a 5mm hexagon wrench which allows you to detach the 3 cap nuts and then loosen the fastener in a counterclockwise direction before taking out the cover. The service begins with air cleaner hose removal along with its attached resonator followed by unfastening of the air intake chamber assembly. Start by disconnecting the fuel injector connectors before extracting the air assistance hoses along with their respective pipe. Begin by removing the fuel hose clamp from the fuel filter outlet pipe at No.1 location with caution because of stored fuel pressure. Use extreme caution when extracting delivery pipes together with the 6 injectors and No.1 fuel pipe while preventing injectors from falling and removing the 4 spacers from the intake manifold. You need to pull out each of the 6 delivery pipe injectors before removing the O-rings along with 2 grommets on each injector. Installation requires fitting new insulators and grommets to each injector followed by applying light oil with gasoline to the replacement O-rings before assembly. Insert the 6 injectors inside the delivery pipes when turning them toward the outside while adding spindle oil or gasoline to the delivery pipe injector O-ring contact point. First apply spindle oil or gasoline to the intake manifold regions touching the injector O-ring then attach the delivery pipes with fuel pipe and six injectors to the intake manifold. Install the 4 delivery pipe bolts and the No.1 fuel pipe bolt just for testing purposes while ensuring the injectors move without resistance; if the move is restricted, replace the O-rings. Tighten the 4 delivery pipe bolts to 10 N.m of torque (100 kgf.cm, 7 ft.lbf) and the No.1 fuel pipe bolt to 19.5 N.m torque measurement (200 kgf.cm, 14 ft.lbf). Install the No.1 fuel pipe correctly by using the white paint marks for alignment and verify the fuel hose clamp creates a "click" sound when it is tightly secured. Reinstall the air assist hoses together with the pipe before rematching the injector connectors and putting back together the V-bank cover with air intake chamber assembly and air cleaner hose with resonator using three cap nuts and pressing down the fastener. Accomplish fuel leak inspection while never using previous O-rings and protecting fresh O-rings during installation and precedent application of spindle oil or gasoline before using them.