Fuel Injector: Testing and Inspection

1NR-FE FUEL: FUEL INJECTOR: INSPECTION

1. INSPECT FUEL INJECTOR ASSEMBLY

(a) Check the resistance.





(1) Measure the resistance according to the value(s) in the table below.

Text in Illustration





Standard Resistance:





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

(b) Check the operation.

CAUTION:
Perform the inspection in a well-ventilated area.

Do not perform the inspection near any open flames.

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





SST : 09268-31013

09268-41500

90467-13001

95336-08070

Text in Illustration





(2) Install the new O-ring onto the fuel injector.





Text in Illustration





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

SST : 09268-31013

09268-41141

09268-41410

90467-13001

95336-08070

(4) Put the injector into a graduated cylinder.

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

(5) Operate the fuel pump Fuel System.

(6) Connect SST (wire) to the injector assembly 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

Injection Volume:





Difference between each injector:

12 cm3 (0.7 cu in.) or less

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

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

(c) Check for leaks.





(1) Disconnect the tester probes of SST (wire) from the battery and check for fuel leaks from the injector.

Standard fuel Drop:

1 drop or less per 12 minutes