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Home >> Hyundai >> 2021 >> Veloster N Standard Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) >> DTC P0506-00: Idle Air Control System-RPM Lower Than Expected >> System Inspection >> Spark Plug Inspection

Spark Plug Inspection

  1. Remove cylinder's spark plugs
  2. Visually/physically inspect the following items:

    Specification:  Approx. 0Ω

    • Damaged insulation, Worn electrodes, Oil or fuel fouled, Loose terminals and cracks.
    • Check for plug gap: 0.7 ~ 0.8 mm (0.028 ~ 0.031 in.)
    • Check if the spark plug for the relevant cylinder is lighter in color than the other plugs.
  3. Has a problem been found in any of the above areas?

    YES 

    NO 

    • Go to next step as below.
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