11 12 595 Checking a valve guide for wear (N62)
WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.
(valve removed)
To measure tilt clearance, install a new valve so that end of valve stem is flush with valve guide. Attach dial gauge and measure tilt clearance.
NOTE:
Max. permissible tilt clearance. See 11 12 CYLINDER HEAD WITH COVER N62TU
.