Fuel Injector: Testing and Inspection

2AZ-FXE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) Check the resistance.

(1) Using an ohmmeter, measure the resistance according to the value(s) in the table below.

Standard Resistance:





(1) If the result is not as specified, replace the injector assembly.

(b) Inspect the injector injection volume.

NOTICE:
Keep the injector away from sparks during this test.

(1) Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).





Text in Illustration





SST : 09268-31012

09268-41500

90467-13001

95336-08070

(2) Install the O-ring onto the fuel injector assembly.





Text in Illustration





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

SST : 09268-31012

09268-41110

09268-41300

90467-13001

95336-08070

(4) Set the injector assembly in a graduated cylinder.

CAUTION:
Install a suitable vinyl tube onto the injector assembly to prevent gasoline from spraying.

(5) Operate the fuel pump Testing and Inspection.

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





Text in Illustration





SST : 09842-30080

Standard injection volume:

76 to 92 cc (4.6 to 5.6 cu.in.) per 15 seconds

Standard difference between each injector:

16 cc (1.0 cu.in.) or less

NOTICE:
Always do the switching at the battery side.

(6) If the injection volume is not as specified, replace the injector assembly.

(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 25 minutes

(1) If there are excessive leaks, replace the injector assembly.