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Fuel Injectors

  1. Using a stethoscope, listen for fuel injector operation during idle or cranking. The sound should be produced at shorter intervals as engine speed increases. Ensure the sound from an adjacent injector is not mistaken as the sound of an inoperative injector.
  2. Turn off engine and disconnect fuel injector connectors. Using an ohmmeter, measure resistance between fuel injector terminals. At 68°F (20°C), resistance should be 13-16 ohms.
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