Fuel Injector: Testing and Inspection

INSPECTION




1. INSPECT FUEL INJECTOR ASSEMBLY
a. Measure the resistance between the injector terminals.

Standard resistance: 11.6 to 12.4 Ohms at 20 degrees C (68 degrees F)

If the result is not as specified, replace the injector.

b. Inspect the injector injection.

CAUTION: Keep the injector away from sparks during the test.




1. Install the fuel tube connector to SST (hose). Then connect the tube connector to the fuel pipe (vehicle side).

SST 09268-41048 (09268-41500, 90467-13001, 95336-08070)

2. Install the O-ring to the fuel injector.




3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).

SST 09268-41048 (90467-13001, 09268-41110, 09268-41300)

4. Put the injector into the graduated cylinder.

CAUTION: Install a suitable vinyl tube onto the injector to contain gasoline spray.

5. Operate the fuel pump.




6. Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.

SST 09842-30080

Standard injection volume: 76 to 92 cu.cm (4.6 to 5.6 cu in.) per 15 seconds

Standard difference between each injector: 16 cu.cm (1.0 cu in.) or less




c. Inspect the fuel leakage.
1. Disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.

Standard fuel drop: 1 drop or less per 12 minutes

2. Turn the ignition switch OFF.
3. Disconnect the cable from the negative (-) battery terminal.
4. Remove SST.

SST 09268-41048 (09268-41500, 90467-13001, 95336-08070, 09268-41110, 09268-41300), 09842-30080

5. Disconnect the intelligent tester from the DLC3.
6. Reconnect the fuel inlet hose (rear fuel pipe) to the fuel main tube.