LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2007 >> ES 350 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Fuel >> Fuel Injector >> Installation
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Fuel Injector: Installation

  1. INSTALL FUEL INJECTOR ASSEMBLY 
    1. Apply a light coat of spindle oil or gasoline to new O-rings, and install them to each injector.
      Fig 1: Applying Light Coat Of Spindle Oil Or Gasoline To O-Rings
      G04975017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Apply a light coat of spindle oil or gasoline where the fuel delivery pipe contacts the O-ring.
    3. Push the fuel injector while turning it to install the injector in the fuel delivery pipe.
    4. Position the fuel injector connector outward.
      NOTE:
      • Be careful not to twist the O-ring.
      • After installing the fuel injector, check that it turns smoothly. If not, reinstall it with a new O-ring.
        Fig 2: Pushing Fuel Injector And Fuel Delivery Pipe
        G04975018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install 6 new insulators to the intake manifold.
      Fig 3: Identifying Insulators To Intake Manifold
      G04975010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Place the fuel delivery pipe which has the 6 fuel injectors installed to it in position on the intake manifold.
      NOTE: Be careful not to drop the fuel injectors when installing the fuel delivery pipe.
    7. Temporarily install the 5 bolts which are used to hold the fuel delivery pipe to the intake manifold.
      NOTE: After installing the fuel injectors, check that they turn smoothly. If not, reinstall the injectors with new O-rings.
      Fig 4: Locating Fuel Delivery Pipe And Fuel Injectors
      G04975009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Tighten the 5 bolts which are used to hold the fuel delivery pipe to the intake manifold.

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

    9. Connect the 6 fuel injector connectors.
      Fig 5: Locating Fuel Injector Connectors
      G04975008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CONNECT FUEL TUBE SUB-ASSEMBLY 
    1. Push in the tube connector onto the pipe until the tube connector makes a "click" sound.
      NOTE:
      • Before connecting the tube, make sure that it is not damaged. Make sure that there is no dirt present on the connecting surfaces.
      • After connecting, check that the fuel tube connector and the pipe are securely connected by pulling on them.
    2. Install the No. 2 fuel pipe clamp.
      Fig 6: Locating No. 2 Fuel Pipe Clamp
      G05138197Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL INTAKE AIR SURGE TANK ASSEMBLY 
    NOTE: DO NOT apply oil to the bolts listed below:
    TIGHTENING PARTS

    Tightening Parts
    Surge Tank and Intake Manifold
    No. 1 Surge Tank Stay and Surge Tank
    Throttle Body Bracket and Surge Tank
    1. Install a new gasket to the intake air surge tank.
    2. Using a 5 mm hexagon socket wrench, install the 4 bolts. (*1)

      Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf) 

    3. Install the intake air surge tank with the 2 nuts and 2 bolts. (*2)

      Torque: Nut 

      16 N*m (163 kgf*cm, 12 ft.*lbf) 

      Bolt 

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

      Fig 7: Locating Intake Air Surge Tank Nuts And Bolts
      G05248492Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the connector.
      Fig 8: Locating Connector
      G04974478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install the vacuum hose clamp with the bolt.

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

      Fig 9: Locating Vacuum Hose Clamp With Bolt
      G04974477Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Connect the union to check valve hose. (*1)
    7. Connect the No. 1 ventilation hose. (*2)
      Fig 10: Locating Check Valve Hose And No. 1 Ventilation Hose
      G05248512Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Install the clamp and connect the throttle with motor body assembly connector. (*3)
    9. Connect the vapor feed hose. (*4)
    10. Connect the 2 water by-pass hoses to the throttle with motor body assembly. (*5)
  4. INSTALL AIR CLEANER CAP SUB-ASSEMBLY  (See INSTALLATION )
  5. ADD ENGINE COOLANT  (See ON-VEHICLE INSPECTION )
  6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    Fig 11: Locating Vapor Feed Hose
    G05248513Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. CHECK FOR ENGINE COOLANT LEAKS  (See COOLING SYSTEM )
  8. CHECK FOR FUEL LEAKS (See  ON-VEHICLE INSPECTION   ) 
  9. INSTALL V-BANK COVER SUB-ASSEMBLY  (See INSTALLATION )
  10. INSTALL FRONT SUSPENSION CENTER UPPER BRACE 
  11. INSTALL ENGINE ROOM SIDE COVER RH  (See INSTALLATION )
  12. INSTALL ENGINE ROOM SIDE COVER LH  (See INSTALLATION )
  13. INSTALL COOL AIR INTAKE DUCT SEAL  (See INSTALLATION )
  14. PERFORM INITIALIZATION 
    1. Perform initialization procedures (See INITIALIZATION )

      HINT:

      Some systems need initialization after reconnecting the cable to the negative battery terminal.

scientia non olet · About LEMON Manuals