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Home >> Ford >> 1992 >> Probe GL, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - EEC-IV >> Fuel System >> Fuel Control >> Fuel Injector Check
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Fuel Injector Check

  1. Connect tachometer to engine. Run engine at idle. Disconnect and reconnect injectors individually. When disconnected, each injector should cause a momentary drop in engine speed of at least 100 RPM. Engine RPM drop should only be momentary as ECA will attempt to reestablish correct idle RPM.
  2. Replace any injectors which do not cause sufficient drop in engine speed. When test is complete, check idle speed. Refer to emission control specifications on decal in engine compartment or see IDLE SPEED in ADJUSTMENTS article in the ENGINE PERFORMANCE section.
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