Volkswagen Workshop Service and Repair Manuals > Polo Mk5 > Power unit | 4-cyl. injection engine with timing chain | Engine cylinder head, valve gear | Valve gear

Checking valve guides

Special tools and workshop equipment required

t	Universal dial gauge bracket -VW 387-

t	Dial gauge

Test procedure

–	Insert new valve into guide. The end of the valve stem must be flush with the guide. Due to slight differences in stem diameters, use only an inlet valve in inlet guide and an exhaust valve in exhaust guide.

–	Determine rock. Wear limit: 0.8 mm

If rock tolerance is exceeded:

–	Renew cylinder head.

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