See also:

Timing Belt
Inspect all parts related to the timing belt for damage and deformation. Replace any damaged parts immediately. ...

Bi-level heating
Your Hyundai is equipped with bi-level heating controls. To use this feature: o Set the air intake control to the fresh air () position. o Set the air flow control at the bi-level () position. ...

Spark plugs
Make sure to install new spark plugs of the correct heat range. ...