Valve Guides, Checking

Special tools and workshop equipment required 

• Dial Indicator Holder :VW387 
• Dial Gauge - 0-10mm :VAS6079 

Procedure 

• If the valve is replaced during a repair, use a new valve for measurement.
• Only use an intake valve in the intake valve guide and an exhaust valve in the exhaust valve guide.

-- Secure the :VAS6079  on the cylinder head with the :VW387  as shown.

Fig 1: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

-- Place the valve in the valve guide.

• Valve stem tip must seal with the valve guide.

-- Determine the tilting clearance.

• Wear limit: 0.8 mm.

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

-- Replace the cylinder head if the wear limit is still exceeded. The valve guides cannot be replaced.