Fuel Injector: Testing and Inspection

1GR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) 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.

2. INSPECT INJECTION VOLUME AND LEAKAGE

(a) Check the injector injection.





SST : 09268-31013

09268-41091

09268-41120

09268-41141

09268-41410

09268-41500

90467-13001

95333-06030

95336-08070

Text in Illustration





CAUTION:
* This test involves high-pressure fuel and electricity.
* Take every precaution regarding safe handling of both the fuel and the electrical parts.
* Perform this test in a safe area, and avoid any sparks or flame.
* Do not smoke.
(1) Assemble SST as shown in the illustration.

(2) Discharge the fuel system pressure Service Precautions.

(3) Disconnect the fuel inlet hose (fuel tube connector) from the fuel pipe.

(4) Remove the bolt and disconnect the fuel pressure regulator from the fuel delivery pipe Removal.

NOTICE:
Do not disconnect the No. 2 fuel pipe from the fuel pressure regulator.

(5) Connect SST to the fuel pipe.





SST : 09268-31013

09268-41500

Text in Illustration





CAUTION:
Always read the precautions before connecting the fuel tube connector.

(6) Connect SST (hose) to the fuel inlet of the pressure regulator with another SST (union) and the 2 bolts.





SST : 09268-31013

09268-41091

95336-08070

Text in Illustration





Torque : 9.0 Nm (92 kgf-cm, 80 in-lbf)

(7) Connect the fuel return hose to the fuel outlet of the pressure regulator.

(8) Install a new O-ring to the injector.





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

SST : 09268-31013

09268-41141

09268-41410

90467-13001

95336-08070

Text in Illustration





Put the injector into a graduated cylinder.

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

(11) Operate the fuel pump Fuel System.

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

SST : 09842-30080





Text in Illustration





Standard injection volume:

71 to 86 cm3 (4.3 to 5.2 cu. in.) per 15 seconds

Difference between each injector:

15 cm3 (0.9 cu. in.) or less

NOTICE:
Always turn the voltage on and off on the battery side, not the fuel pump side.

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

(b) Check for fuel leaks.

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

Standard fuel drop:

1 drop or less per 12 minutes

If the fuel drop is not as specified, replace the injector assembly.