Valve clearance
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Explanation of scheduled maintenance items / Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation.
See also:
Brake Hoses and Lines
Visually check for proper installation, chafing, cracks, deterioration and any
leakage. Replace any deteriorated or damaged parts immediately. ...
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 ...
97,500 miles (156,000 km) or 78 months
❑ Inspect air cleaner filter
❑ Inspect vacuum hose
❑ Replace engine oil and filter (97,500 miles (156,000 km) or 156 months) ...


