Spark plugs
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Explanation of scheduled maintenance items / Spark plugs
Make sure to install new spark plugs of the correct heat range.
See also:
Checking and Changing the Engine Coolant
WARNING:
Do not remove the radiator cap when the engine is hot. When the engine is hot,
the engine coolant is under pressure and may erupt through the opening if the cap
is removed. You could be ...
POWER WINDOWS (If Installed)
The power windows operate when the ignition key is in the "ON" position. The
main switches are located on the driver's armrest and control the front (4/3 Door)
and rear windows (4 ...
Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary.
An authorized HYUNDAI dealer should perform the operation. ...


