Valve Guides, Checking

WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Dial Gauge HolderVW 387
Dial GaugeVAS 6079

Procedure

NOTE:

If valve is replaced during repair, use new valve for measurement.

Due to different stem diameters, only use an intake valve in the intake guide and an exhaust valve in the exhaust guide.

-- Insert valve into valve guide.

Fig 1: Determining Valve Rock (Wear Limit)

Courtesy of AUDI OF AMERICA, LLC

Valve stem tip must seal with valve guide.

-- Determine 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.

NOTE:

The valve guides cannot be replaced.