Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2018 Audi TT 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 tail pipes with cloths or plugs during the leak test.
-- Check for leaks by listening at the connection locations between the cylinder head and the exhaust manifold with the turbocharger, at the exhaust manifold with the turbocharger and catalytic converter, etc.
-- Repair the determined leaks.