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Home >> Lexus >> 2005 >> GS 300 >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> SFI (2JZ-GE) >> Injector >> Inspection

SFI (2JZ-GE): Injector: Inspection

  1. INSPECT INJECTOR INJECTION 
    CAUTION: Keep injector clear of sparks during the test.
    Fig 1: Conneting SST For Inspecting Injector Injection
    G02943999Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the nut, and disconnect the fuel inlet hose from the fuel main tube.
    2. Temporarily install SST (attachment) to the fuel main tube.

      SST 09268-41047 (09268-52011)

    3. Tighten the flare nut on the fuel main tube. (See SFI SYSTEM )
    4. Connect SST (hose) to the SST (attachment).

      SST 09268-41047

      Fig 2: Removing Nut & Disconnecting Fuel Inlet Hose From Fuel Main Tube
      G02944000Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Install the O-ring to the injector.
    6. Connect SST (hose) to the injector with SST (adapter), and hold the injector and adapter with SST (clamp).

      SST 09268-41047 (09268-41110, 09268-41300)

    7. Put the injector into the graduated cylinder.
      CAUTION: Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out.
      Fig 3: Adjusting SST (Hose) & SST (Adaptor) & SST Clams & O-Ring With Vinyl Hose
      G02944001Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    8. Connect the LEXUS hand-held tester to the DLC3.
      Fig 4: Connecting Lexus Hand-Held Tester To DLC3
      G02944002Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Connect the battery negative (-) terminal cable to the battery.
    10. Turn the ignition switch ON and LEXUS hand-held tester main switch ON.
      NOTE: Do not start the engine.
    11. Select the ACTIVE TEST mode on the LEXUS hand-held tester.
    12. Refer to the LEXUS hand-held tester operator's manual for further details.
    13. If you have no LEXUS hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector. (See FUEL PUMP )
    14. Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times (see Fig 5).

      SST 09842-30070

      Injection volume: 

      60 - 73 cm 3  (3.7 - 4.5 cu in.) per 15 seconds 

      Difference between each injector: 

      13 cm 3  (0.8 cu in.) or less 

      If the injection volume is not as specified, replace the injector.

      Fig 5: Connecting SST (Wire) To Injector
      G02944003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT LEAKAGE 
    1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.

      SST 09842-30070

      Fuel drop: 1 drop or less per 12 minutes 

      Fig 6: Inspecting For Fuel Leakage At Injector
      G02944004Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch OFF.
    3. Disconnect the negative (-) terminal cable from the battery.
    4. Remove the SST.

      SST 09268-41047, 09842-30070

    5. Reconnect the fuel inlet hose to the fuel main tube. (See SFI SYSTEM )
    6. Install the fuel inlet hose with the nut.

      Torque: 9 N.m (90 kgf.cm, 80 in.lbf) 

    7. Disconnect the LEXUS hand-held tester from the DLC3.