See also:

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

Fuel recommendations
Use Unleaded Gasoline Unleaded gasoline with a Pump Octane Rating of 87 (Research Octane Number 91) or higher must be used in your Hyundai. WARNING: o Do not "top off" after the nozzl ...

Checking electric cooling fans
WARNING: The cooling fan is controlled by engine coolant temperature and may sometimes operate even when the engine is not running. Use extreme caution when working near the blades of the cooling ...