Fuel Injectors (Tacoma, Tundra 3.4L V6 & 4Runner)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- Remove necessary components for access to fuel injectors. Ensure ignition is off. Disconnect electrical connector at fuel injector.
- Using ohmmeter, check resistance between electrical terminals on fuel injector. On Tacoma and 4Runner, replace fuel injector if resistance is not 13.8 ohms at 68°F (20°C). On Tundra, replace fuel injector if resistance is not 13.4-14.2 ohms at 68°F (20°C). On all models, see FUEL RAILS & FUEL INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article for servicing of fuel injector.
- On all models, to check fuel injector volume, remove fuel injector. See FUEL RAILS & FUEL INJECTORS under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article. Fuel injector is connected to fuel inlet pipe and fuel pressure regulator for checking fuel injector volume.
- Ensure area around fuel inlet pipe and fuel inlet hose is clean. Fuel inlet hose goes from fuel inlet pipe near the frame up to the fuel rail. Disconnect fuel inlet hose from fuel inlet pipe. Connect Adapter (SST 09268-52011) and delivery hose from Fuel Injector Measuring Kit (SST 09268-41047) to fuel inlet pipe. See Fig 1.
- Remove fuel pressure regulator from fuel rail. See FUEL PRESSURE REGULATOR under FUEL SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article. Using NEW "O" ring, install Union (SST 09268-41091) on fuel pressure regulator. See Fig 1. Connect delivery hose to union and fuel return hose on fuel pressure regulator.
- Check that "O" ring is installed on top of fuel injector. Connect fuel injector to the delivery hose. See Fig 1. Place vinyl tube on end of fuel injector to prevent fuel spillage. Place fuel injector into a clean graduated container.
- Connect Toyota hand-held tester to data link connector No. 3 at driver's side of instrument panel. See Figure-Figure
. Turn ignition on and then turn hand-held tester on. Select ACTIVE TEST MODE on hand-held tester. Using hand-held tester manufacturer's instructions, activate fuel pump.NOTE: On Tacoma and 4Runner, fuel pump may also be operated to pressurize fuel system by applying battery voltage to electrical terminals on fuel pump. For operating of fuel pump, see appropriate FUEL PUMP RESISTANCE & OPERATION procedure under FUEL DELIVERY under FUEL SYSTEMS.
- On all models, connect Fuel Injector Tester (09842-30070) to fuel injector for 15 seconds. See Figure. Measure fuel injector volume. Test each fuel injector 2-3 times. Replace fuel injector if fuel injector volume is not within specification. See FUEL INJECTOR VOLUME SPECIFICATIONS table. Ensure difference between fuel injector volume on all fuel injectors is within specification. See FUEL INJECTOR VOLUME SPECIFICATIONS table.
- Disconnect fuel injector tester. Ensure fuel leakage from end of fuel injector does not exceed one drop within 12 minutes. Replace fuel injector if leakage exceeds one drop within 12 minutes. Disconnect negative battery cable. Remove test equipment.
- Using NEW "O" ring, install fuel pressure regulator. Tighten fuel pressure regulator bolts to 71 INCH lbs. (8.0 N.m). Install negative battery cable. Check for fuel leaks by operating the fuel pump by using hand-held tester or connecting battery voltage to fuel pump.FUEL INJECTOR VOLUME SPECIFICATIONS
Application cc (Cu. In.) Volume Avalon, Camry, Camry Solara, Highlander & Sienna 60-73 (3.7-4.5) Land Cruiser, Sequoia, Tacoma & Tundra 56-69 (3.4-4.2) 4Runner 60-73 (3.7-4.5) Maximum Difference Between Fuel Injectors All Models 13 (.8)