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Fuel Injector Test

WARNING: This page is about a different car, the 1996 Ford Probe and 1995 Ford Probe. However, it is still accessible from the selected car via links, so may be relevant.
  1. With engine idling or cranking (no start), use stethoscope to listen for consistent, operational sounds (clicking) coming from each injector. If operational sounds are present, go to FUEL INJECTOR LEAKAGE TEST  . If operational sounds are not present, go to next step.
  2. Disconnect fuel injector connector and install injector test light (noid light) into injector connector. Start or crank engine. Observe whether light blinks, indicating completed circuit for injector being tested. Repeat test for each injector. If injector circuits check okay, go to next step. If any circuit fails test, turn ignition on. Check for 12 volts at each injector connector. If 12 volts are present at each injector connector, go to next step. If 12 volts is not present at each connector, repair wiring as necessary.
  3. Using DVOM, check injector resistance. Replace injector if resistance is not about 12-16 ohms at 68°F (20°C). If injector resistance is okay, go to FUEL INJECTOR LEAKAGE TEST  .
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