Exhaust System, Checking For Leaks: Procedure
WARNING: This page is about a different car, the 2015 Volkswagen Jetta. 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 tail pipes with cloths or plugs during the leak test.
-- Check for leaks at the connection points from the exhaust manifold to the cylinder head and from the turbocharger to the front exhaust pipe.
-- Repair the determined leaks.