Foreign Objects In Engine

WARNING: This page is about a different car, the 2016 Audi A8 Quattro and 2015 Audi A8 Quattro. However, it is still accessible from the selected car via links, so may be relevant.

To prevent foreign objects from entering when working on the engine, open intake and exhaust tract channels must always be sealed off with suitable plugs, for example from the Engine Bung Set :VAS6122 .
If mechanical damage to a cylinder bank is found, check the intake and exhaust tract and the combustion chambers in the opposite cylinder bank for foreign objects to prevent subsequent damage.