Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI2001A6 AVANT QUATTROREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 14 (4.2L V8 5V (ENGINE CODE: BAS)ENGINE CYLINDER HEAD VALVETRAINVALVE GEAR, SERVICINGNOTES
2001 Audi A6 Avant Quattro
Valve gear, servicing: Notes
2001 Audi A6 Avant QuattroSECTION Notes
WARNING: This page is about a different car, the 2005 Audi allroad, 2004 Audi allroad, and 2003 Audi allroad. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Cylinder heads which have cracks between the valve seats or between valve seat inserts and the spark plug thread can be used further without reducing service life, provided the cracks do not exceed a maximum of 0.3 mm in width, or when no more than the first 4 turns of the spark plug threads are cracked.
- After installing camshafts wait for approx. 30 minutes before starting engine. Hydraulic valve compensation elements have to settle (otherwise valves will strike pistons).
- After working on valve gear, carefully crank engine through at least 2 revolutions by hand to ensure that no valves make contact on starting.
- Always replace gaskets, oil seals and O-rings.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.