Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2020 Audi A4, 2019 Audi A4, 2018 Audi A4, and 2017 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
-- Start the engine and let it run at 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.