Hyundai Azera: Check spark plugs and ignition system
Inspect your spark plugs as described in section 7 and replace them if necessary. Also check all ignition wiring and components to be sure they are not cracked, worn or damaged in any way.
Change to "winter weight" oil if necessary
To keep locks from freezingMaster Cylinder Components and Components Location
Components
1. Reservoir cap2. Reservoir3. Grommet4. Master cylinder
...
Troubleshooting
Troubleshooting
SymptomSuspect areaRemedyEngine misfire with abnormal internal lower engine noises.Worn crankshaft bearings.Loose or damaged engine drive plate.Replace the crankshaft and bearings ...
Fuel Additives
HYUNDAI recommends that you use good quality gasolines treated with detergent
additives such as TOP TIER Detergent Gasoline, which help prevent deposit formation
in the engine. These gasolines will ...