Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2021 Audi A6 Quattro, 2020 Audi A6 Quattro, and 2019 Audi A6 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Procedure
-- Start the engine and let it run in idle.
-- Seal the tailpipes, for example, with a cloth or a plug, for the duration of the leak test.
-- Check for leaks by listening at connection areas of cylinder head/turbocharger, turbocharger/front exhaust pipe etc.
-- Repair the determined leaks.