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Home >> Lexus >> 2012 >> LS 460L AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System (Service Information) >> FUEL INJECTOR (For Port Injection) >> Removal >> Removal

FUEL INJECTOR (For Port Injection): Removal: Removal

  1. PRECAUTION 
    WARNING:
    • Do not smoke or be near an open flame when working on the fuel system.
    • Keep gasoline away from rubber or leather parts.
    • Do not allow fuel to spray when removing the pipe between the high pressure side fuel pump and the fuel injector. The fuel in the pipe is highly pressurized.
  2. DISCHARGE FUEL SYSTEM PRESSURE 
    1. Discharge fuel system pressure. Refer to PRECAUTION .
  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
  4. REMOVE INTAKE MANIFOLD 
    1. Remove the intake manifold. Refer to REMOVAL .
  5. DISCONNECT NO. 3 FUEL HOSE 
    Fig 1: Pinching Tube Connector
    GTY148232Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the fuel pipe clamp.
    2. Pinch the tube connector and then pull out the fuel hose.
      NOTE:
      • Check for any dirt and foreign matter contamination in the pipe and around the connector. Clean if necessary. Foreign matter may damage the O-rings or cause leaks in the seal between the pipe and connector.
      • Do not use any tools to separate the pipe and connector.
      • Do not forcefully bend or twist the nylon tube.
      • Check for any dirt and foreign matter on the pipe seal surface. Clean if necessary.
      • Put the pipe and connector ends in plastic bags to prevent damage and dirt contamination.
      • If the pipe and connector are stuck together, pinch the tube between your fingers and turn it carefully to free it. Then disconnect the hose.
  6. REMOVE FUEL TUBE SUB-ASSEMBLY 
    Fig 2: Identifying Fuel Tube Retainer
    GTY138045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Lift up the retainer to release its lock.
    2. Pinch the tube connector and then pull out the fuel tube.
      NOTE:
      • Check for any dirt and foreign matter contamination in the pipe and around the connector. Clean if necessary. Foreign matter may damage the O-rings or cause leaks in the seal between the pipe and connector.
      • Do not use any tools to separate the pipe and connector.
      • Do not forcefully bend or twist the nylon tube.
      • Check for any dirt and foreign matter on the pipe seal surface. Clean if necessary.
      • Put the pipe and connector ends in plastic bags to prevent damage and dirt contamination.
      • If the pipe and connector are stuck together, pinch the tube between your fingers and turn it carefully to free it. Then disconnect the tube.
  7. REMOVE FUEL DELIVERY PIPE 
    1. Disconnect the 2 delivery pipe connectors.
      Fig 3: Identifying Delivery Pipe Connectors
      GTY142251Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 4 wire harness clamps.
      Fig 4: Identifying Wire Harness Clamps
      GTY105476Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 4 bolts and 2 fuel delivery pipes.
      Fig 5: Identifying Fuel Delivery Pipes Bolts
      GTY105313Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: When removing the delivery pipe, hold the pipe by both ends and pull it straight upward.
    4. Remove the 4 delivery pipe spacers and 8 insulators from the cylinder head.
  8. REMOVE FUEL INJECTOR ASSEMBLY 
    1. Remove the 8 fuel injectors from the fuel delivery pipes.
      Fig 6: Attaching Tag To Injector Shaft
      GTY103445Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE: For reinstallation, attach a tag or label to the injector shaft.
    2. Disconnect the connector from the injector.
      Fig 7: Disconnecting Connector From Injector
      GTY105314Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the O-ring from the fuel injector.
      Fig 8: Identifying O-Ring Of Fuel Injector
      GTY267480Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002