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Home >> Kia >> 2012 >> Forte LX, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 3) - Except SULEV >> DTC P0266: Cylinder 2 Injector Circuit Balance (Load Drop is Detected) >> Inspection/Repair >> System Inspection >> Check Spark Plug
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Check Spark Plug

  1. Check spark plug and ignition coil
    1. Visually/physically inspect the following items:
      • Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks
      • Loose contact of electrical wires
      • Poor connection
    2. Measure resistance of spark plug component.

      Specification:  5.6 k Ω ± 20%

    3. Measure resistance of primary and secondary ignition coil.

      Specification: 

      Primary ignition coil. : 0.56 ~ 0.68 Ω (20°C)

      Secondary ignition coil : 6 ~ 8 kΩ (20°C)

    4. Has a problem been found?

      YES 

      NO 

      • Go to next procedure.
  2. Check Spark Plug
    1. Visually/physically inspect the following items:
      • Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks
      • Check for plug gap : 1.0 ~ 1.1 mm
    2. Has a problem been found?

    YES 

    NO 

    • Go to next procedure.