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.

Standard Resistance:





If the resistance is not as specified, replace the injector.

(b) Inspect the injection volume.

NOTICE:
* This test involves high-pressure fuel and electricity. Take every precaution 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) 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 a new O-ring onto the fuel injector assembly.

(3) Connect SST (adapter and hose) to the fuel injector assembly, and hold the fuel injector assembly 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) Set the injector assembly in a 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

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

Standard Injection Volume:





Difference between each injector:

16 cm3 (0.96 cu in.) or less

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

(c) Check for leaks.





(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 16 minutes