Hyundai 22212-23000 Valve-Exhaust

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Because of the complex nature of the job and the special tools and equipment needed, servicing of the valve seats and valve guides, commonly known as a valve job, should be done by a professional. The valves themselves aren't serviceable.

To check and adjust the clearance on these engines, you should: Position the number 1 cylinder at TDC on the compression stroke. Measure the clearances of the indicated valves with feeler gauges and record out-of-spec measurements. Turn the crankshaft one complete revolution and measure the remaining valves. With the camshaft lobe above the first valve to be adjusted pointing upward, depress the lifter with a special lifter tool. Remove the adjusting shim and measure its thickness with a micrometer. Calculate the correct thickness of a replacement shim using a formula. Select a shim with a thickness as close as possible to the calculated valve clearance. Install the shim into position using a light coat of motor oil for lubrication. Recheck the valve clearances. Reinstall the valve cover, spark plugs, and other components.