Fuel Injector: Testing and Inspection

2ZR-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:





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

(b) Check the operation.

Inspect the injector injection volume.

CAUTION:
Perform the inspection in a well-ventilated area.

Do not perform the inspection near a naked flame.

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





Text in Illustration





SST : 09268-31014

09268-41500

09268-41700

95336-08070

NOTICE:
Ensure that the SST connector O-rings are not damaged and are free of foreign objects as they are used to seal the connections between the fuel tube connector and pipe.

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

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





Text in Illustration





SST : 09268-31014

09268-41110

09268-41300

09268-41700

95336-08070

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

(4) Tie SST (clamp and adapter) together with SST (tie band) as shown in the illustration.





Text in Illustration





SST : 09268-31014

09268-41110

09268-41300

09268-41800

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

(6) Operate the fuel pump Fuel System.

(7) 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

NOTICE:
Always switch the voltage on and off at the battery side, not the injector side.

Standard Injection Volume:





Difference between each injector:

13 cc (0.8 cu.in.) or less

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

(c) Inspect for leaks.





(1) In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leaks from the injector.

Standard fuel drop:

1 drop or less every 25 minutes

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