Fuel Injector ASSY (3MZ-FE): Replacement

1. Disconnect the 2 VSV connectors.
2. Remove the wire harness clamp.
   Fig 1: Disconnecting VSV Connectors

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3. Disconnect the fuel vapor feed hose No. 1.
4. Disconnect the fuel vapor feed hose No. 2.
5. Disconnect the 2 vacuum hoses.
6. Remove the clamp.
7. Remove the 2 nuts, then remove the emission control valve set.
   Fig 2: Removing Emission Control Valve Set

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1. Disconnect the throttle motor connector.
2. Disconnect the water by-pass hose No. 3.
3. Disconnect the water by-pass hose No. 2.
4. Disconnect the union to check valve hose.
   Fig 3: Disconnecting Throttle Motor Connector, Water By-Pass Hoses & Check Valve Hose

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5. Disconnect the ventilation hose.
   Fig 4: Disconnecting Ventilation Hose

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6. Remove the 2 nuts, then remove the pressure feed tube.
   Fig 5: Removing Pressure Feed Tube Nuts

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7. Remove the 2 bolts, then remove the engine hunger No. 1.
8. Remove the 2 bolts, then remove the surge tank stay No. 1.
9. Remove the 2 bolts, then remove the surge tank stay No. 2.
   Fig 6: Removing Engine Hunger & Surge Tank Bolts

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10. Disconnect the bond cable No. 1 connector.
11. Using a socket hexagon wrench 8, remove the 4 bolts.
12. Remove the 2 nuts, then remove the emission control valve bracket and intake air surge tank.
13. Remove the gasket from the intake air surge tank.
    Fig 7: Removing Bond Cable Connector, Bolts, Emission Control Valve Bracket And Intake Air Surge Tank

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1. Remove the fuel pressure pulsation damper and 2 gaskets.
2. Remove the fuel pipe No. 2 union bolt and 2 gaskets.
3. Remove the bolt, then separate the fuel pipe No. 1.
   Fig 8: Removing Fuel Pressure Pulsation Damper, Gaskets & Bolts

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1. Disconnect the 6 fuel injector connectors.
   Fig 9: Disconnecting Fuel Injector Connectors

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2. Remove the 4 bolts, then remove the 2 fuel delivery pipes together with the 6 fuel injectors.
   NOTE: Be careful not to drop the fuel injectors when removing the fuel delivery pipe.
   Fig 10: Removing Fuel Delivery Pipes

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the 4 delivery pipe No. 1 spacers from the intake manifold.
4. Remove the 6 insulators from the intake manifold.
   Fig 11: Removing Insulators From Intake Manifold

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5. Pull out the fuel injector from the fuel delivery pipe.
   Fig 12: Pulling Out Fuel Injector From Fuel Delivery Pipe

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1. Install new grommets to each fuel injector.
2. Apply a light coat of spindle oil or gasoline to new O-rings, then install them to each fuel injector.
   Fig 13: Installing Grommets To Each Fuel Injector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Apply a light coat of spindle oil or gasoline to the place where the fuel delivery pipe contacts the O-ring.
4. Push the fuel injector while twisting it back and forth to install it in the fuel delivery pipe.
   NOTE:

   • Be careful not to twist the O-ring.
   • After installing the fuel injectors, check that they turn smoothly. If not, replace O-ring with a new O-ring.
   Fig 14: Installing Fuel Delivery Pipe

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5. Install 6 new insulators and the 4 delivery pipe No. 1 spacers to the intake manifold.
6. Place the 2 fuel delivery pipes together with the 6 fuel injectors to the intake manifold.
   NOTE: Be careful not to drop the fuel injectors when installing the fuel delivery pipe.
7. Temporarily install the 4 bolts which attach the fuel delivery pipe to the intake manifold.
8. Check that the fuel injectors rotate smoothly.

   If the fuel injectors do not rotate smoothly, the probable cause is incorrect installation of the O-ring. Replace it with a new one.

   Fig 15: Attaching Fuel Delivery Pipe To Intake Manifold

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Tighten the 4 bolts.

   Torque: 10 N.m (102 kgf.cm, 7 ft.lbf) 

10. Connect the 6 fuel injector connectors.

1. Install 2 new gaskets and fuel pipe No. 2 union bolt.

   Torque: 33 N.m (331 kgf.cm, 24 ft.lbf) 

2. Install 2 new gaskets and fuel pressure pulsation damper.

   Torque: 33 N.m (331 kgf.cm, 24 ft.lbf) 

3. Install the fuel pipe No. 1 with the bolt.

   Torque: 20 N.m (199 kgf.cm, 14 ft.lbf) 

1. Install a new gasket to the intake air surge tank.
2. Install the intake air surge tank and emission control valve bracket with the 2 nuts.

   Torque: 28 N.m (286 kgf.cm, 21 ft.lbf) 

3. Using a socket hexagon wrench 8, tighten the 4 bolts.

   Torque: 28 N.m (286 kgf.cm, 21 ft.lbf) 

4. Install the surge tank stay No. 2 with the 2 bolts.

   Torque: 20 N.m (199 kgf.cm, 14 ft.lbf) 

5. Install the surge tank stay No. 1 with the 2 bolts.

   Torque: 20 N.m (199 kgf.cm, 14 ft.lbf) 

6. Install the engine hunger No. 1 with the 2 bolts.

   Torque: 20 N.m (199 kgf.cm, 14 ft.lbf) 

7. Install the pressure feed tube with the 2 nuts.

   Torque: 7.8 N.m (80 kgf.cm, 69 in.lbf) 

8. Connect the ventilation hose.
9. Connect the union to check valve hose.
10. Connect the water by-pass hose No. 2.
11. Connect the water by-pass hose No. 3.
12. Connect the throttle motor connector.

Torque: 8.0 N.m (82 kgf.cm, 71 in.lbf) 

Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)