Valve Guides, Checking

Special tools and workshop equipment required 

• Dial Indicator Holder:VW387 
  Fig 1: Dial Gauge Holder

  Courtesy of AUDI OF AMERICA, LLC
• Dial Indicator - 0-10mm:VAS 6079 
  Fig 2: Dial Gauge

  Courtesy of AUDI OF AMERICA, LLC

Test Sequence

Fig 3: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

• If the valve is to be replaced as part of a repair, use a new valve for the 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 the valve in the valve guide.

• Valve stem tip must seal with the valve guide.

-- Determine the tilting clearance.

• Wear limit: 0.6 mm.

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

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

TIP:

The valve guides cannot be replaced.