Fuel Injector: Testing and Inspection

2TR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY





(a) Check the resistance.

(1) Using an ohmmeter, measure the resistance between the terminals.

Resistance:

11.6 to 12.4 Ohms at 20°C (68°F)

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

(b) Check the injection volume.

CAUTION:
This test involves high-pressure fuel and electricity, therefore, safety precautions should be taken. Perform this test in a safe area and avoid any sparks and flames. Do not smoke.

(1) Discharge the fuel system pressure Service Precautions.

(2) Remove the fuel hose from the fuel pressure pulsation damper Removal.

(3) Remove the fuel hose from the fuel pipe Service Precautions.

(4) Separate the pressure regulator Removal.

NOTICE:
Do not separate the fuel hose No.2.

(5) Assemble SST as shown in the illustration.

SST : 09268-31012

09268-41091

09268-41110

09268-41120

09268-41500

95336-08070

90467-13001

09268-41310





(6) Connect SST to the fuel pipe.





(7) Install the pressure regulator onto SST (union) with the 2 bolts.





Torque : 8.5 Nm (87 kgf-cm, 75 in-lbf)

NOTICE:
Make sure that the O-ring is installed onto the pressure regulator.

(8) Install the O-ring onto the injector.





(9) Assemble SST as shown in the illustration.

(10) Put the injector into a graduated cylinder.

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

(11) Make sure that SST is installed as shown in the illustration.





(12) Operate the fuel pump Testing and Inspection.

(13) 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





SST : 09842-30080

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

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

(c) Check the leakage.





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

Fuel drop:

1 drop or less in 12 minutes