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Checking variable valve timing >
< Machining valve seats
A4 Mk1
Power unit
6-cylinder engine (5 valve), mechanics
Engine cylinder head, valve gear
Servicing valve gear
Checking valves
Checking valves
Checking valves
–
Visually inspect for scoring on valve stem and surface of seat.
If scoring is clearly visible:
–
Renew the relevant valve.
Power unit
6-cylinder engine (5 valve), mechanics
Engine cylinder head, valve gear
Servicing valve gear
Checking valves
Checking variable valve timing >
< Machining valve seats