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Home >> Kia >> 2020 >> Niro Plug-In Hybrid LXS >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System (PHEV) >> Spark Plug >> Repair Procedures >> Cleaning >> Notes
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Repair Procedures: Cleaning: Notes

The combustion temporarily becomes unstable, due to the aged fuel and the carbon deposits accumulated on the spark plug(s) after long-term storage.