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Eliminating Engine Oil Leak from Valve Cover

Model: Audi A6 MK 2, C5 - Years: 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Part: Engine oil

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Video tutorial

It is recommended to perform this repair only if you have good mechanical knowledge, as the parts involved in disassembly are particularly complex. First, remove the front bumper and the complete cross member with headlights and radiator (you will clearly need to disconnect the plugs and hoses).

Then remove the auxiliary belt and the timing belt. Disassemble the air filter cover and the coolant reservoir.

Disconnect the spark plug wires and remove the boots. Extract the timing pulley from the upper left and the underlying cover.

Then disassemble the valve cover and remove the gaskets (the peripheral and the central one). Then simultaneously extract the two camshafts along with the chain, then the chain tensioner and the end gasket of the camshaft (in a semicircular shape). Reposition the new camshaft gasket, the chain tensioner, and the two camshafts previously removed.

Replace the seals and end caps of the camshafts; apply silicone sealant to the edge of the camshaft mounting support and reassemble the support itself. Apply the new gaskets (the peripheral and the central one) of the valve cover and reassemble the cover itself.

At this point, reassemble everything: it is suggested to check and possibly replace the timing kit (belt, bearings, and tensioner) and the auxiliary belt.


Updated on 3 February 2026 by ScegliAuto


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