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Home >> Lexus >> 2014 >> IS 350 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 83 (Fuel System (4GR-FSE) - Service Information) >> Fuel Injector >> Removal [04/2013 - 08/2015] >> Procedure

Removal [04/2013 - 08/2015]: Procedure

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 

    Refer to REMOVAL [04/2013 - 08/2015] 

  2. REMOVE NO. 3 FUEL PIPE SUB-ASSEMBLY 
    1. Remove the 4 bolts and No. 3 fuel pipe sub-assembly from the fuel delivery pipe sub-assembly.
      GTY462184Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Front
      NOTE:

      Pull and remove the No. 3 fuel pipe sub-assembly in a straight line to avoid damage to the seal surface of the delivery pipe O-rings.

    2. Remove the 2 O-rings, No. 1 back-up ring, No. 2 back-up ring, No. 3 back-up ring and 2 E-rings from the No. 3 fuel pipe sub-assembly.
  3. REMOVE NO. 2 FUEL DELIVERY PIPE SUB-ASSEMBLY 
    1. Disconnect the 3 wire harness clamps.
      GTY460254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Bolt
      Front Side
    2. Remove the 2 bolts and 2 nuts.
    3. With the connectors still connected, disconnect the No. 2 fuel delivery pipe sub-assembly.
      GTY469305Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Front Side
      NOTE:
      • If fuel intrudes into the combustion chamber, there may be adverse effects to the engine main body.
      • Make sure that the fuel delivery pipe sub-assembly and No. 2 fuel delivery pipe sub-assembly are disconnected from the No. 2 fuel delivery pipe sub-assembly.
      • Be extremely careful not to touch or strike the tips of the fuel injector assembly.
      • Pull and remove the fuel pipe in a straight line without tilting it.
    4. Disconnect the 3 fuel injector assembly connectors.
    5. Remove the 3 injector vibration insulators from the cylinder head sub-assembly.
  4. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    1. Disconnect the fuel pressure sensor connector and wire harness clamp.
      GTY402836Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 2 wire harness clamps.
      GTY461627Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Bolt
      Front Side
    3. Remove the 2 bolts and 2 nuts.
    4. With the connectors still connected, disconnect the fuel delivery pipe sub-assembly.
      GTY465558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Front Side
      NOTE:
      • If fuel intrudes into the combustion chamber, there may be adverse effects to the engine main body.
      • Be extremely careful not to touch or strike the tips of the fuel injector assembly.
      • Pull and remove the fuel delivery pipe sub-assembly in a straight line without tilting it.
    5. Disconnect the 3 fuel injector assembly connectors.
    6. Remove the 3 injector vibration insulators from the cylinder head sub-assembly.
  5. REMOVE FUEL INJECTOR ASSEMBLY 
    1. Secure the fuel delivery pipe sub-assembly and No. 2 fuel delivery pipe sub-assembly in a vise between aluminum plates and pull out the 6 fuel injector assemblies.
      NOTE:
      • Pull and remove each fuel injector assembly in a straight line to avoid damage to the seal surface of the fuel delivery pipe sub-assembly and No. 2 fuel delivery pipe sub-assembly O-ring.
      • For reinstallation, attach a tag or label with the corresponding cylinder number to each fuel injector assembly.
      GTY461698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the nozzle holder clamp from each fuel injector assembly.
    3. Remove the O-ring, No. 1 back-up ring, No. 2 back-up ring, No. 3 back-up ring, and E-ring from each fuel injector assembly.
  6. REMOVE FUEL INJECTOR SEAL 
    1. Using the tip of needle nose pliers, pinch and pull either of the 2 fuel injector seals at several points to stretch it. Repeat this for the other fuel injector seal.
      GTY463303Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Excessively pinching the fuel injector seal may damage the groove of the fuel injector assembly.
      • If a fuel injector assembly is dropped or the tip of a fuel injector assembly is struck, replace it with a new one.
    2. Remove the 2 fuel injector seals from the fuel injector assembly.