audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Valve Seat > < Fuel Pressure Release|Service and Repair
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Valve Guide: Testing and Inspection

Valve guides, checking 

Special tools and equipment: 

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Dial indicator bracket VW 387

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Dial indicator

CAUTION!  Because of the difference in stem diameters, always use an intake valve to check intake valve guides and only use an exhaust valve to
check exhaust valve guides.

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Install valve in valve guide so that end of valve stem is flush with end of guide.

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Measure amount of rock (axial play).

Wear limit 

Note: 
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If the wear limit is exceeded, repeat measurement with new valves. If the measurement is again exceeded, replace cylinder head. Valve guides
cannot be replaced.

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If you intend to replace the valve, measure with new valve.

Valve Seat > < Fuel Pressure Release|Service and Repair