Fuel Injector: Testing and Inspection

1GR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) Check the resistance.





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

Standard:





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

(b) Check the injection volume.





NOTICE:
* Perform the test in a well-ventilated area and watch out for flames.
* Handle the fuel tube connector carefully.

(1) Install the SST (fuel tube connector) into SST (hose), then connect the tube connector to the fuel pipe.





SST : 09268-31012

95336-08070

09268-41091

SST : 09268-41140

SST : 09268-41400

09268-41500

SST : 09842-30080

(2) Remove the pressure regulator Removal.

(3) Install the O-ring onto the fuel inlet of the pressure regulator.

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





SST : 09268-31012

95336-08070

09268-41091

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

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

(6) Install a new O-ring onto the injector.





(7) Connect SST (adaptor and hose) to the injector and hold the injector and union with SST (clamp).

SST : 09268-31012

95336-08070

SST : 09268-41140

SST : 09268-41400

(8) Set the injector in a graduated cylinder.

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

(9) Connect the Techstream to the DLC3.

(10) Turn the ignition switch to ON.

(11) Turn the Techstream ON.

(12) Enter the following menu:

Select: Data List / Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.

(13) Install SST onto the fuel injector.

SST : 09842-30080

(14) Connect SST to the battery, then measure the injection volume for 15 seconds. Perform the inspection 2 or 3 times, then calculate the average.





Standard::





NOTICE:
Always do the switching at the battery side.

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

(c) Check the fuel leakage.

(1) When checking the injection volume, remove SST from the battery. Inspect the fuel leakage from the fuel injector.

Standard:

1 drop or less every 12 minutes.

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