Injection/Leakage Inspection

1. INSPECT INJECTOR INJECTION





CAUTION: Keep injector clean of sparks during the test.




a. Disconnect the fuel inlet hose (rear fuel pipe) from the fuel main tube.
b. Temporarily install SST (union) to the fuel main tube.
SST 09268-41047 (09268-52011)
c. Tighten the flare nut on the fuel main tube.
d. Connect SST (hose) to the SST (union).
SST 09268-41047




e. Install the O-ring to the injector.
f. Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp).
SST 09268-41047 (09268-41110, 09268-41300)
g. Put the injector into the graduated cylinder.

CAUTION: Install a suitable vinyl hose onto the injector to prevent gasoline from splashing out.




h. Connect a LEXUS hand-held tester to the DLC3.
i. Connect the battery negative (-) cable to the battery.
j. Turn the ignition switch ON, and push the LEXUS hand- held tester main switch ON.

NOTE: Do not start the engine.

k. Select the active test mode on the LEXUS hand-held tester.
I. Please refer to the LEXUS hand-held tester operator's manual for further details.
m. If you have no LEXUS hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.




n. 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.
SST 09842-30070
Volume: 60-73 Cu.cm (3.7-4.5 Cu.in) per 15 seconds
Difference between each injector: 13 Cu.cm (0.8 cu in.) or less
If the injection volume is not as specified, replace the injector.




2. INSPECT LEAKAGE
a. 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
b. Turn the ignition switch OFF.
c. Disconnect the negative (-) terminal cable from the battery.
d. Remove the SST.
SST 092608-41047, 09842-30070
e. Disconnect the LEXUS hand-held tester from the DLC3.
f. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.