Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2010 Audi Q7, 2009 Audi Q7, 2008 Audi Q7, and 2007 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
-- Start engine and let run at idle.
-- Seal tailpipes with cloths or plug for the duration of the leak test.
-- Check for leaks by listening at connections of cylinder head/primary catalytic converter, exhaust manifold/front exhaust pipe etc.
-- Repair leaks detected.