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Home >> Lexus >> 2003 >> GS 300 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel Systems >> Fuel Control >> Fuel Injector Operation
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Fuel Injector Operation

Remove engine cover. Using a stethoscope, listen for clicking from each injector (or feel injector for vibration using a screwdriver) with engine running or cranking. If clicking is not heard, check for loose connection at fuel injector connector or fuel injector resistance. See FUEL INJECTOR RESISTANCE . If fuel injector is okay, check for no voltage signal at suspect injector connector.