2005 Lexus LX 470FACTORY OEM SERVICE PROCEDURE

Fuel Delivery: SFI: Injector: Installation

  1. INSTALL INJECTORS AND DELIVERY PIPES 
    NOTE:
    • Be careful not to drop the injectors when installing the delivery pipes.
    • Since the O-ring may be stuck to the injector, do not put a side load on it at the removal.
    1. Install a new grommet to each injector.
    2. Apply a light coat of gasoline to new O-rings and install them to each injector.
      Fig 1: Installing Grommet
      G02991259Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. While turning the injector clockwise and counterclockwise, push it to the delivery pipes. Install the 8 injectors.
      Fig 2: Installing Injector In Fuel Rail
      G02991260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Position injector connector outward.
    5. Place the 4 spacers and 8 new insulators on the intake manifold.
    6. Place the 2 delivery pipes and the injectors assemblies on the lower intake manifold.
    7. Temporarily install the 4 nuts.
    8. Install the front fuel pipe with the bolt, the 4 new gaskets and the 2 union bolts.

      Torque: 

      39 N.m (400 kgf.cm, 29 ft.lbf) for union bolts 

      7.5 N.m (80 kgf.cm, 66 in.lbf) for bolt 

    9. Install the bolt holding the clamp on the fuel return pipe to the LH delivery pipe.

      Torque: 7.5 N.m (80 kgf.cm, 66 in.lbf) 

      Fig 3: Installing Fuel Return Pipe
      G02991261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    10. Check that the injectors rotate smoothly.

      HINT:

      If injectors do not rotate smoothly, the probable cause is incorrect installation of O-rings. Replace the O-rings in that case.

    11. Position the injector connector outward.
      Fig 4: Positioning Injector Connector Outward
      G02991262Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    12. Tighten the 4 nuts holding the delivery pipes to the lower
    13. intake manifold.

      Torque: 21 N.m (214 kgf.cm, 15 ft.lbf) 

    14. Connect the 8 injectors connectors.
  2. INSTALL ENGINE WIRE TO LH DELIVERY PIPE 

    Install the 2 wire clamps on the engine wire to the brackets on the delivery pipe.

  3. INSTALL ENGINE WIRE PROTECTOR 
    1. Connect the engine wire clamp to the No. 1 engine hanger.
    2. Install the engine wire protector with the 2 bolts.
    3. Connect the PCV hose to the PCV valve.
    4. Connect VSV EVAP to the upper intake manifold.
    5. Install the No. 1 V-bank cover bracket to the upper intake manifold.
    6. Install the No. 2 V-bank cover bracket to the upper intake manifold.
    7. Install the No. 3 V-bank cover bracket to the upper intake manifold.
    8. Install the No. 4 V-bank cover bracket to the upper intake manifold.
    Fig 5: Installing Wire Clamps On Engine Wire
    G02991263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL FUEL PRESSURE PULSATION DAMPER (See  PRECAUTION   ) 
  5. INSTALL INTAKE AIR CONNECTOR 
  6. INSTALL V-BANK COVER 
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.