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Home >> Kia >> 2006 >> Sorento EX, RWD >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> MFI Control System >> Fuel Injector >> Injector Checking >> Using Stethoscope And Voltmeter >> Operation Sound Check

Operation Sound Check

  1. Using a stethoscope, check the injectors for a clicking sound at idle. Check that the sound is produced at shorter intervals as the engine speed increases.
    NOTE: Ensure that the sound from an adjacent injector is not being transmitted along the delivery pipe to an inoperative injector.
    Fig 1: Using A Stethoscope To Check For Injector Operation
    G00340429Courtesy of KIA MOTORS AMERICA, INC.
  2. If a stethoscope is not available, check the injector operation with your finger. If no vibration is felt, check the wiring connector, injector or injection signal from the ECU.
    Fig 2: Using A Finger To Check For Injector Operation
    G00340430Courtesy of KIA MOTORS AMERICA, INC.
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