Other information:
Hyundai Sonata LF 2014-2019 Service Manual: Spark Plug Repair procedures
Inspection
[On vehicle inspection]
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 below.
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Hyundai Sonata LF 2014-2019 Owners Manual: Climate Control Air Filter
Filter Inspection
The climate control air filter should be replaced according to the Maintenance
Schedule. If the vehicle is operated in severely air-polluted cities or on dusty
rough roads for a long period, it should be inspected more frequently and replaced
earlier. When you replace the climat ...