Injectors Inspection

1. INSPECT INJECTOR INJECTION

CAUTION: Keep injector clear of sparks during the test.

- Disconnect the fuel inlet hose from the fuel tube.
- Connect SST (hose) to the fuel inlet tube with SST (union).
- Tighten the flare nut on the fuel tube.
SST 09268-41046 (09268-52011)

Torque: 30 N.m (310 kgf.cm. 22 ft.lb.)

HINT: Use SST.


- SST 09631-22020
- Disconnect the fuel return hose from the fuel tube.
- Install a new O-ring to the fuel inlet of the pressure regulator.
- Connect SST (hose) to the fuel inlet of the pressure regulator with SST (union) and the 2 bolts.
SST 09268-41046 (09268-41091)
- Connect the fuel return hose to the fuel outlet of the pressure regulator with SST (union), 2 new gaskets and union bolt.
SST 09268-41046 (09268-41071)





- Install the grommet and a new O-ring to the injector.
- Connect SST (hose) to the injector with SST (union), and hold the injector and union with SST (clamp).
SST 09268-41046
- Put the injector into the graduated cylinder.

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





- Connect the LEXUS hand-held tester to the DLC3.
- Turn the ignition switch ON and LEXUS hand-held tester main switch ON.

NOTICE: Do not start the engine.

- Select the active test mode on the LEXUS hand-held tester.

Please refer to the LEXUS hand-held tester operator's manual for further details.





- If you have no LEXUS hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.


- 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

Injection volume: 70 - 88 sq.cm
(4.3 - 5.4 cu. in.) per 15 Sec.

Difference between each injector: 9 cub.cm
(0.5 cu. in.) or less

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





2. INSPECT LEAKAGE
- 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: One drop or less per minute






- Turn the ignition switch to LOCK.
- Disconnect the negative (-) terminal cable from the battery.
- Remove the SST.
SST 09268-41046
- Reconnect the fuel return hose to the fuel tube.
- Reconnect the fuel inlet hose to the fuel tube. SST 09631-22020

Torque: 30 N.m (310 kgf.cm, 22 ft.lb.)

HINT: Use a torque wrench with a fulcrum
length of 30cm(11.81 in.).

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