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Fuel Delivery: SFI: Injector: Inspection

  1. INSPECT INJECTOR INJECTION 
    CAUTION: Keep injector clear of sparks during the test. 
    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.
      1. SST 09268-41047 (09268-52011)
      3. Fig 1: Inspecting Injector Injection (1 Of 3)
      G00893902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Tighten the flare nut on the fuel main tube (See SFI SYSTEM ).
    4. Connect SST (hose) to the SST (attachment).
      1. SST 09268-41047
        Fig 2: Inspecting Injector Injection (2 Of 3)
        G00893903Courtesy 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).
      1. SST 09268-41047 (09268-41110, 09268-41300)
        2. Fig 3: Inspecting Injector Injection (3 Of 3)
        G00893904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Put the injector into the graduated cylinder.
      CAUTION: Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out. 
    8. Connect the hand-held tester to the DLC3.
      Fig 4: Connecting Hand-Held Tester To DLC3
      G00893905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    9. Connect the battery negative (-) terminal cable to the battery.
    10. Turn the ignition switch ON and hand-held tester main switch ON.
      NOTE: Do not start the engine. 
    11. Select the ACTIVE TEST mode on the hand-held tester.
    12. Please refer to the hand-held tester operator's manual for further details.
    13. If you have no 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.
      Fig 5: Measuring Injection Volume With Graduated Cylinder
      G00893906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. SST 09842-30070
      2. Injection volume: 60 - 73 cm 3  (3.7 - 4.5 cu in.) per 15 sec. 
      3. Difference between each injector: 13 cm 3  (0.8 cu in.) or less 

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

  2. INSPECT LEAKAGE 
    Fig 6: Inspecting Leakage
    G00893907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leakage from the injector.
      1. SST 09842-30070
      2. Fuel drop: 1 drop or less per 12 min. 
    2. Turn the ignition switch OFF.
    3. Disconnect the negative (-) terminal cable from the battery.
    4. Remove the SST.
      1. 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.
      1. Torque: 9 N.m (90 kgf.cm, 80 in.lbf) 
    7. Disconnect the hand-held tester from the DLC3.
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