Component Inspection

INSPECTION




1. INSPECT INJECTOR INJECTION

CAUTION: Keep injector clean of sparks during the test.




a. Disconnect the fuel inlet hose (fuel tube connector) from the fuel filter.

CAUTION:
- Perform disconnecting operations of the fuel tube connector (quick type) after observing the precautions.
- As there is retained pressure in the fuel pipe line, prevent it from splashing inside the engine compartment.




b. Purchase the new fuel main hose and take out the fuel tube connector from its hose.
Part No.23271-50150




c. Connect SST (hose) and fuel tube connector to the fuel filter outlet.
SST 09268-41047

CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.

HINT: Use the vehicle's fuel filter.




d. Remove the pressure regulator from the delivery pipe.
e. Install the O-ring to the fuel inlet of the pressure regulator.
f. Connect SST (hose) to the fuel inlet of the pressure regulator with SST (union) and the 2 bolts.
SST 09268-41047 (09268-41091)

Torque: 7.5 N.m (80 kgf.cm, 66 in.lbf)

g. Connect the fuel return hose to the fuel outlet of the pressure regulator.




h. Install the O-ring to the injector.

i. Connect SST (adaptor and hose) to the injector, and hold the injector and union with SST (clamp).
SST 09268-41047 (09268-41110, 09268-41300)

j. Put the injector into the graduated cylinder.

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




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

NOTE: Do not start the engine.

n. Select the ACTIVE TEST mode on the LEXUS hand-held tester.
o. Please refer to the LEXUS hand-held tester operator's manual for further details.
p. If you have no LEXUS hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.




q. 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: 56 - 69 cu.cm (3.4 - 4.2 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 and fuel tube connector.
SST 09268-41047, 09842-30070

e. Disconnect the LEXUS hand-held tester from the DLC3.
f. Reconnect the fuel inlet pipe (fuel tube connector) to the fuel filter.

CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.