Fuel Injector ASSY (1NZ-FXE): Replacement

1. Remove the 2 bolts then remove the engine room relay block No. 2.
2. Remove the 4 wire harness clamps.
   Fig 1: Removing Wire Harness Clamps

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3. Remove the 7 bolts, then remove the cowl top panel outer front.
   Fig 2: Removing Bolts

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1. Disconnect the brake fluid level switch connector.
2. Remove the 2 bolts.
3. Separate the claw fitting, then remove the brake master cylinder reservoir.
   Fig 3: Disconnecting Brake Fluid Level Switch Connector

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1. Remove the fuel vapor feed hose No. 2 from the hose clamp.
2. Remove the connector clamp.
3. Remove the wire harness clamp.
4. Remove the 3 bolts, then remove the reservoir bracket.
   Fig 4: Removing Fuel Vapor Feed Hose No. 2 From Hose Clamp

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1. Remove the 2 wire harness clamps.
2. Disconnect the 4 fuel injector connectors.
3. Disconnect the 4 ignition coil connectors.
4. Remove the 3 bolts, then remove the engine wire and brake master cylinder reservoir cover.
   Fig 5: Removing Wire Harness Clamps

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5. Remove the 4 bolts, then remove the 4 ignition coils.

   HINT:

   Each ignition coil is installed with 1 bolt.

   Fig 6: Removing Bolts

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6. Disconnect the ventilation hose from the ventilation valve.
7. Disconnect the ventilation hose No. 2 from the cylinder head cover.
   Fig 7: Disconnecting Ventilation Hose From Ventilation Valve

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8. Remove the 9 bolts, 2 seal washers and 2 nuts, then remove the cylinder head cover.
   Fig 8: Removing Bolts And Cylinder Head Cover

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1. Disconnect the fuel tube from the fuel delivery pipe.
   1. Remove the EFI fuel pipe clamp No. 1.
   2. Pinch the retainer of the fuel tube connector, then pull put the fuel tube connector to disconnect the fuel tube from the fuel delivery pipe.
      NOTE:

      • Remove dirt or foreign objects on the fuel tube connector before this work. 
      • Do not allow any scratches or foreign objects on the parts when disconnecting as the fuel tube connector has the O-ring that seals the pipe. 
      • Perform this work by hand. Do not use any tools. 
      • Do not forcibly bend, twist or turn the nylon tube. 
      • Protect the connected part by covering it with a vinyl bag after disconnecting the fuel tube. 
      • If the fuel tube connector and pipe are stuck, push and pull them to release. 
      Fig 9: Disconnecting Fuel Tube From Fuel Delivery Pipe

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      Fig 10: Identifying Nylon Tube And Retainer

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2. Remove the 3 bolts, then remove the fuel delivery pipe together with the 4 fuel injectors.
   NOTE: Do not drop the fuel injectors when removing the fuel delivery pipe. 
   Fig 11: Removing Bolts

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3. Remove the 2 delivery pipe No. 1 spacers from the cylinder head.
4. Remove the 4 insulators from the cylinder head.
   Fig 12: Removing Delivery Pipe No. 1 Spacers From Cylinder Head

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1. Pull out the 4 fuel injectors from the fuel delivery pipe.
   Fig 13: Pulling Out Fuel Injectors From Fuel Delivery Pipe

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1. Apply a light coat of spindle oil or gasoline to a new O-ring, then install it to each fuel injector.
   Fig 14: Installing Fuel Injector Assy

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2. Apply a light coat of spindle oil or gasoline to the surface of the fuel delivery pipe which contacts the O-ring of the fuel injector.
3. Apply a light coat of spindle oil or gasoline to the O-ring again, then turning the fuel injector right and left to the fuel delivery pipe.
   NOTE: Be careful that the O-ring is not cracked or jammed when installing. 
4. Check that the fuel injector rotates smoothly.

   If the fuel injector does not rotate, replace the O-ring.

   Fig 15: Turning Fuel Injector Right And Left To Fuel Delivery Pipe

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1. Install 4 new insulators to the cylinder head.
2. Install the 2 delivery pipe No. 1 spacers to the cylinder head.
   NOTE: Be careful of the installation direction of the delivery pipe spacer. 
   Fig 16: Installing New Insulators To Cylinder Head

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3. Install the fuel delivery pipe together with the 4 fuel injectors, then temporarily tighten the 3 bolts.
   NOTE: Do not drop the fuel injectors when installing the fuel delivery pipe. 
4. Check that the fuel injector rotates smoothly.

   If the fuel injector does not rotate, replace the O-ring.

5. Retighten the 3 bolts with the specified torque.

   Torque: 

   19 N.m (194 kgf.cm, 14 ft.lbf) for bolt A 

   9.0 N.m (92 kgf.cm, 80 in.lbf) for bolt B 

   Fig 17: Installing Fuel Delivery Pipe Together With Fuel Injectors

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6. Connect the fuel tube to the fuel delivery pipe.
   1. Align the fuel tube connector with the pipe, then push in the fuel tube connector until the retainer makes a "click" sound to connect the fuel tube to the fuel delivery pipe.
      NOTE:

      • Check that there are no scratches or foreign objects around the connected part of the fuel tube connector and pipe before this work. 
      • After connecting the fuel tube, check that the fuel tube connector and pipe are securely connected by pulling them. 
   2. Install the EFI fuel pipe clamp No. 1.
      Fig 18: Installing EFI Fuel Pipe Clamp

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1. Apply seal packing to the cylinder head as illustrated.

   Seal packing: Part No. 08826-00080 or equivalent 

   NOTE:

   • Remove any oil from the contact surface. 
   • Install the cylinder head cover within 3 minutes after applying seal packing. 
   • Do not start the engine within 2 hours of installation. 
   Fig 19: Applying Seal Packing To Cylinder Head

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2. Tighten the 9 bolts, 2 seal washers and 2 nuts in the sequence shown in the illustration to install the cylinder head cover.

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

3. Connect the ventilation hose No. 2 to the cylinder head cover.
4. Connect the ventilation hose to the ventilation valve.
5. Install the 4 ignition coils with the 4 bolts.

   Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf) 

6. Install the engine wire and brake master cylinder reservoir cover with the 3 bolts.

   Torque: 9.0 N.m (92 kgf.cm, 80 in.lbf) 

7. Connect the 4 ignition coil connectors.
8. Connect the 4 fuel injector connectors.
9. Install the 2 wire harness clamps.
   Fig 20: Tightening Bolts

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1. Temporarily install the reservoir bracket with the bolt 1.
2. Tighten the 3 bolts with the specified torque in the sequence shown in the illustration.

   Torque: 8.5 N.m (87 kgf.cm, 75 in.lbf) 

3. Install the connector clamp.
4. Install the wire harness clamp.
5. Install the fuel vapor feed hose No. 2 to the hose clamp.
   Fig 21: Installing Reservoir Bracket

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Torque: 8.5 N.m (87 kgf.cm, 75 in.lbf) 

Torque: 6.4 N.m (65 kgf.cm, 57 in.lbf)