Valve guides, checking

WARNING: This page is about a different car, the 2009 Audi A4, 2008 Audi A4, 2007 Audi A4, 2006 Audi A4, and 2005 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Special tools, testers and auxiliary items required

Fig 1: Identifying Dial Gauge Holder VW 387

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Dial gauge holder VW 387

Fig 2: Identifying Dial Gauge VAS 6079

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Dial gauge VAS 6079

Test sequence

Fig 3: Identifying Special Tool - VW 387 Installed

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Insert valve into guide. Valve stem end must be flush with the guide. Due to the slight difference in stem dimensions, ensure that only an intake valve is used in the intake guide and an exhaust valve in the exhaust guide.
Determine tip clearance.

Wear limit

Intake valve guide	Exhaust valve guide
0.80 mm	0.80 mm

NOTE:

If wear limit is exceeded, re-measure using new valves. If wear limit is still exceeded, replace cylinder head.
If the valve is to be replaced as part of a repair, use a new valve for the calculation.