Valve Guides, Checking

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2017 Audi S3, 2017 Audi A3 Quattro, 2017 Audi A3, 2016 Audi S3, and 2016 Audi A3 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Dial Indicator Holder: VW 387

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

Procedure

If valve is replaced during repair, use a 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.
The valve guides cannot be replaced.

-- Secure the Dial Indicator - 0-10mm: VAS 6079 on the cylinder head with the Dial Gauge Holder: VW 387 .

Fig 3: Identifying Dial Gauge With Holder

Courtesy of AUDI OF AMERICA, LLC

-- Place the valve in the valve guide.

The end of the valve stem must be flush with the guide.

-- Determine the tilting clearance.

Wear limit: 1.0 mm.

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

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