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Home >> Kia >> 2024 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System (PHEV) >> Spark Plug >> Cleaning >> 1st Method
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1st Method

  1. Start the engine and keep the engine running at idle for 2 minutes.
  2. Place the shift lever in 'N' and press the accelerator to maintain engine RPM at 4500.

    Warm up the engine until engine coolant temperature reaches at 80°C (176°F).

  3. Keep the engine running at 2500 - 3000 RPM in the N position for 15 minutes.
G15787465Courtesy of KIA MOTORS AMERICA, INC.