Kia Soul: Spark Plug Cleaning - Ignition System - Engine Electrical SystemKia Soul: Spark Plug Cleaning

Kia Soul 2014-2019 PS Service Manual / Engine Electrical System / Ignition System / Spark Plug Cleaning

The combustion temporarily becomes unstable, due to the aged fuel and the carbon deposits accumulated on the spark plug(s) after long-term storage.
[1st Method]
1.
Start the engine and keep the engine running at idle for 2 minutes.
2.
Step on the accelerator pedal and hold it steady at 4500 rpm with the shift lever in N position to warm up  the engine until the temperature of the engine coolant reaches 80°C.
3.
Keep the engine running at 2500~3000 rpm in the N position for 15 minutes.
[2nd Method]
  
•
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.
  
•
If equipped with manual transaxle, shift the gear properly for keeping the engine speed above 3500 rpm.

    Spark Plug Inspection
    [On vehicle inspection] 1. Accelerate the engine to about 3,000 rpm 3 times or more. 2. Remove the spark plug. ...

    Spark Plug Removal
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