See also:

Valve clearance
Inspect excessive valve noise and/or engine vibration and adjust if necessary. An authorized HYUNDAI dealer should perform the operation. ...

ADVANCED TECHNOLOGY FOR SUPERIOR FUEL ECONOMY
The 2012 Hyundai Accent's all-aluminum 1.6-liter Gamma four-cylinder engine utilizes the latest engine technology to deliver a class-leading 138 horsepower and 123 lb-ft of torque and a best-in-cl ...

Features
There are no separate trim levels for the Sonata Hybrid, which comes with a slew of standard features and just one option package. Standard are cloth seats, 16-inch alloy wheels, low-rolling-resis ...