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Home >> Kia >> 2020 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System (PHEV) >> Spark Plug >> Repair Procedures >> Inspection >> On Vehicle Inspection

On Vehicle Inspection

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  1. Accelerate the engine to about 3, 000 rpm 3 times or more.
  2. Remove the spark plug.
  3. Check the spark plug visually.

    If the electrode is dry, the spark plug is normal.

    If the electrode is wet, check the damage and electrode gap as shown below.

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