A3 Quattro V6-3.2L (CBRA) (2009)
Valve Guide: Testing and Inspection
Valve Guides, Checking
Special tools, testers and auxiliary items required
‹› Dial Gauge Holder (VW 387)
‹› Dial gauge
Test Sequence
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Insert valve into valve guide. Due to the slight difference in stem dimensions, ensure that only an intake valve is used in the intake guide and an
exhaust valve in the exhaust guide.
‹› Valve stem tip must seal with valve guide.
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Determine tilt clearance.
‹› Tilt clearance wear limit: 0.8 mm.
‹› If wear limit is exceeded, re-measure using new valves. If wear limit is still exceeded, replace cylinder head. The valve guides cannot be replaced.
‹› If the valve is to be replaced as part of a repair, use a new valve for the calculation.