Fuel Injectors Test

Turn ignition off. Unplug each injector connector. Resistance across both terminals should be 13.8 ohms.
To check injector spray pattern and volume, relieve fuel system pressure and remove injectors from engine. Disconnect fuel hose from fuel filter outlet. Use Fuel Injection Kit (09268-41080) to tee fuel injector between fuel filter and fuel pressure regulator. See Fig 1 & 16.
Place injector into a graduated container. Place vinyl tube on end of injector to prevent fuel from splashing out.
Hook up Fuel Injector Tester (09842-30070) or trigger box with appropriate resistor to fuel injector. Turn ignition on, with engine off.
On all models, connect jumper wire to engine check connector terminals "FP" and "+B" to pressurize fuel system. For engine check connector locations, see Figure. Connector terminals are marked on inside of check connector cover. Fuel pump check connector is 2-wire connector near airflow meter in left rear corner of engine compartment (White/Black and Green wires).
On all models, trigger injector for 15 seconds. Measure volume and check spray pattern. Test each injector 2-3 times. Replace injector if volume is not 2.9-3.6 Cu. In. (47-59 cc).
Disconnect injector trigger. Fuel leakage from end of injector should be one drop or less in one minute. Replace injector if leakage is more than specified.

Fig 1: Connection For Testing Fuel Injector

Fig 2: Electrical Testing of Fuel Injector