Fuel Injector: Testing and Inspection

2GR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) Inspect injector 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 resistance is not as specified, replace the injector.

(b) Inspect the injection volume.

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

(1) Connect SST (fuel tube connector) to SST (hose) with SST (hose band), and then connect them to the fuel pipe (vehicle side).





Text in Illustration





SST : 09268-31014

09268-41500

09268-41700

95336-08070

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

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





Text in Illustration





SST : 09268-31014

09268-41141

09268-41410

09268-41700

95336-08070

(4) Install a vinyl tube onto the injector.

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

(5) Tie SST (clamp and adapter) together with SST (tie band) as shown in the illustration.





Text in Illustration





SST : 09268-31014

09268-41141

09268-41410

09268-41800

(6) Put the injector into the graduated cylinder.

(7) Operate the fuel pump Fuel System.

(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.





Text in Illustration





SST : 09842-30080

Volume:

84 to 100 cm3 (5.1 to 6.0 cu in.) in 15 seconds

Difference between each injector:

16 cm3 (0.98 cu in.) or less

NOTICE:
Always switch the voltage on and off on the battery side, not the injector side.

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

(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.

Fuel drop:

1 drop or less in 16 minutes