Fuel Injector: Testing and Inspection

1UR-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:





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

(c) Inspect the injection volume.

CAUTION:
This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both the fuel and the electricity. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.

(1) Remove the fuel pipe clamp.





(2) Disconnect the fuel tube.





(3) Connect SST to the fuel pipe (the vehicle side).





(4) Install the O-ring to the fuel injector.





(5) Install SST and the tube to the fuel injector.

SST : 09268-31012

09268-41500

90467-13001

95336-08070

09268-41300

09268-41600

(6) Put the injector into a graduated cylinder.





CAUTION:
Install a strong rubber tube onto the injector to prevent gasoline from splashing.

(7) Operate the fuel pump (turn the ignition switch to ON).

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

SST : 09842-30090

Standard injection volume:

83 to 99 cm3 (5.0 to 6.0 cu in.) per 15 seconds

Difference between each injector:

16 cm3 (1.0 cu in.) or less

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

(c) Check for leakage.

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





Standard fuel drop:

1 drop or less in 12 minutes