Test Sequence

Fig 1: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

NOTE:

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.

-- Determine the tilting clearance.

-- If the 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.