Valve Guides, Checking

WARNING: This page is about a different car, the 2015 Audi Q7, 2014 Audi Q7, and 2013 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 HolderVW387
Dial Gauge - 0-10mmVAS6079

Procedure

Fig 1: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

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 valve guide and an exhaust valve in the exhaust valve guide.

-- Place valve in valve guide.

Valve stem tip must seal with valve guide.

-- Determine the tilting clearance.

Wear limit: 1.0 mm.

-- If wear limit is exceeded, measure using new valves.

-- Replace the cylinder head if the wear limit is still exceeded.

NOTE:

The valve guides cannot be replaced.