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 an open flame.
(1) Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).
Text in Illustration
SST : 09268-31013
09268-41500
90467-13001
95336-08070
NOTICE:
Ensure that the SST connector O-rings are not damaged and are free of foreign matter 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.
Text in Illustration
(3) Connect SST (adapter and hose) to the injector assembly, and hold the injector assembly and union with SST (clamp).
SST : 09268-31013
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 Fuel System.
(6) Connect SST (wire) to the injector assembly and the auxiliary battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.
SST : 09842-30080
Text in Illustration
Standard Injection Volume:
Difference between each injector:
13 cc (0.8 cu.in.) or less
NOTICE:
Always do the switching on the auxiliary battery side.
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 auxiliary battery and check for fuel leaks from the injector.
Standard fuel drop:
1 drop or less every 25 minutes
If there are excessive leaks, replace the injector assembly.