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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 6) (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 0.9 mm)

    G13162927Courtesy of KIA MOTORS AMERICA, INC.
    G13162928Courtesy of KIA MOTORS AMERICA, INC.
  3. Has any problems been found?

    YES 

    NO