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Home >> Lexus >> 2019 >> NX 300 Base, AWD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel System - Service Information >> FUEL INJECTOR (for Direct Injection) >> Removal [09/2015 - ] >> Procedure

Removal [09/2015 - ]: Procedure

  1. REMOVE INTAKE MANIFOLD 

    Refer to REMOVAL [09/2015 - ]

  2. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY 

    Refer to REMOVAL [09/2015 - 09/2017] , or refer to REMOVAL [09/2017 - ] 

  3. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    1. Remove the 2 bolts and disconnect the sensor wire from the fuel delivery pipe sub-assembly.
      GTY513962Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 4 connectors from the 4 fuel injector sets.
    3. Disconnect the connector from the fuel pressure sensor.
      GTY513963Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the bolt and disconnect the sensor wire.
      GTY516611Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the 3 bolts and 2 nuts, and then remove the fuel delivery pipe sub-assembly together with fuel injector set.
      GTY525143Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be extremely careful not to touch or strike the tips of the fuel injector sets.
      • Be careful not to drop the fuel injector sets when removing the fuel delivery pipe sub-assembly.
  4. REMOVE FUEL INJECTOR SET 
    1. Secure the fuel delivery pipe sub-assembly in a vise between aluminum plates and pull out the 4 fuel injector sets.
      NOTE:
      • Pull and remove each fuel injector set in a straight line to avoid damage to the fuel injector seal surface of the fuel delivery pipe sub-assembly O-ring.
      • After removing the fuel injector sets, remove any O-rings, No. 1 fuel injector back-up rings and No. 3 fuel injector back-up rings remaining on the fuel delivery pipe sub-assembly side.
      • For reinstallation, attach a tag or label with the corresponding cylinder number to each fuel injector set.
      GTY503256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a No. 2
    2. Remove the nozzle holder clamp from each fuel injector set.
    3. Using needle nose pliers, remove the No. 3 fuel injector back-up ring from each fuel injector set.
      NOTE:

      Do not damage the part contacting the O-ring.

    4. Remove the O-ring and No. 1 fuel injector back-up ring from each fuel injector set.
    5. Remove the C-ring and injector vibration insulator from each fuel injector set.
  5. REMOVE FUEL INJECTOR SEAL 
    1. Using the tip of needle nose pliers, pinch and pull either of the fuel injector seal at several points to stretch it. Repeat this for the other fuel injector seal.
      GTY401222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Excessively pinching the fuel injector seal may damage the groove of the fuel injector set.
      • If a fuel injector set is dropped or the tip of a fuel injector set is struck, replace it with a new one.
    2. Remove the fuel injector seal from the fuel injector set.