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Home >> Kia >> 2017 >> Niro EX >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System >> Spark Plug >> Repair Procedures >> Cleaning >> [2nd Method]

[2nd Method]

NOTE: The 2nd method should be performed only if the 1st method fails (the misfire-related codes recur).
  1. Start the engine and keep the engine running at idle for 2 minutes.
  2. Drive the vehicle for over 20 minutes, keeping the engine speed above 3500 RPM.
    NOTE: If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500 RPM.
    Fig 1: Engine Coolant Temperature Timing Pattern (2nd Method)
    G12328974Courtesy of KIA MOTORS AMERICA, INC.
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