2007 Lexus ES 350FACTORY OEM SERVICE PROCEDURE

Fuel Injector: Removal

  1. DISCHARGE FUEL SYSTEM PRESSURE 

    HINT:

    See PRECAUTION  .

  2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
  3. DRAIN ENGINE COOLANT  (See COOLANT )
  4. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  5. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  6. REMOVE ENGINE ROOM SIDE COVER RH  (See REMOVAL )
  7. REMOVE FRONT SUSPENSION CENTER UPPER BRACE 
  8. REMOVE V-BANK COVER SUB-ASSEMBLY  (See REMOVAL )
  9. REMOVE AIR CLEANER CAP SUB-ASSEMBLY  (See ON-VEHICLE INSPECTION )
  10. REMOVE INTAKE AIR SURGE TANK ASSEMBLY 
    1. Disconnect the 2 water by-pass hoses from the throttle with motor body assembly. (*1)
    2. Disconnect the vapor feed hose. (*2)
    3. Disconnect the throttle with motor body assembly connector and clamp. (*3)
      Fig 1: Locating Vapor Feed Hose And Water By-Pass Hoses From Throttle With Motor Body Assembly
      G05248488Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Disconnect the No. 1 ventilation hose. (*4)
    5. Disconnect the union to check valve hose. (*5)
      Fig 2: Locating No. 1 Ventilation Hose And Valve Hose
      G05248489Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Remove the bolt and vacuum hose clamp.
      Fig 3: Locating Vacuum Hose Clamp
      G04974477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Disconnect the connector.
      Fig 4: Locating Connector
      G04974478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Using a 5 mm socket hexagon wrench, remove the 4 bolts. (*1)
    9. Remove the 2 nuts, 2 bolts and intake air surge tank. (*2)
    10. Remove the gasket from the intake air surge tank.
      Fig 5: Locating Intake Air Surge Tank Nuts And Bolts
      G05248492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. DISCONNECT FUEL TUBE SUB-ASSEMBLY 
    1. Remove the No. 2 fuel pipe clamp.
    2. Pinch the tube connector and then pull out the fuel pipe.
      NOTE:
      • Check that there is no dirt or other foreign objects around the connector disconnecting it. Clean the connector as necessary.
      • It is necessary to prevent mud or dirt from entering the quick connector. If mud or dirt gets in the connector, the O-rings may not seal properly.
      • Only disconnect the quick connector by hand.
      • Do not bend, kink or twist the nylon tubes. Protect the connector by covering it with a plastic bag.
      • If the pipe and the connector are stuck, carefully try wiggling or pushing and pulling on the connector to release it. Pull the connector off the pipe carefully.
        Fig 6: Pinching Tube Connector
        G04975007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. REMOVE FUEL INJECTOR ASSEMBLY 
    1. Disconnect the 6 fuel injector connectors.
      Fig 7: Locating Fuel Injector Connectors
      G04975008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 5 bolts and fuel delivery pipe together with the 6 fuel injectors.
      NOTE: Be careful not to drop the fuel injectors when removing the fuel delivery pipe.
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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.