SFI System (3UZ-FE): Injector: Inspection

INSPECT INJECTOR INJECTION

Fig 1: Inspecting Injector Injection
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CAUTION: Keep injector clean of sparks during the test.
1. Disconnect the fuel inlet hose (rear fuel pipe) from the fuel main tube.
2. Temporarily install SST (union) 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 (union).
  SST 09268-41047
5. Install the O-ring to the injector.
  
  Fig 3: Installing O-Ring To Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Connect SST (union and hose) to the injector, and hold the injector and union 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.
8. Connect a LEXUS hand-held tester to the DLC3
  
  Fig 4: Connecting LEXUS Hand-Held Tester To DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
9. Connect the battery negative (-) cable to the battery.
10. Turn the ignition switch ON, and push the 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. Please 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.
  
  Fig 5: Connecting SST (Wire) To Injector & Battery
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  SST 09842-30070
  
  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.
INSPECT LEAKAGE
1. In the condition above, disconnect the tester 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: Checking Fuel Leakage From Injector
  Courtesy 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. Disconnect the LEXUS hand-held tester from the DLC3.
6. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube. (See SFI SYSTEM )