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Home >> Kia >> 2017 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 3) (PHEV) >> DTC P0300-00: Random/Multiple Cylinder Misfire Detected >> System Inspection >> Ignition System Inspection >> Spark Plug Inspection

Spark Plug Inspection

  1. Refer to SPARK PLUG and visually and/or physically inspect following conditions:
    • Damaged insulation, worn electrodes, oil or fuel fouled, loose terminals and cracks.
  2. Measure the electrode gap.

    Specification:  Approx. 0.0314 to 0.0354 in (0.8 to 0.9mm)

    G12356700Courtesy of KIA MOTORS AMERICA, INC.
    G12356701Courtesy of KIA MOTORS AMERICA, INC.
  3. Has any problems been found?

    YES 

    NO 

    • Go to "Fuel System Inspection" procedure below.