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Exhaust manifolds and intermediate pipes > < Stress-free alignment of exhaust system - vehicles with SCR catalytic converter

A4 Mk3

Checking exhaust system for leaks
Checking exhaust system for leaks
Procedure
–  Start the engine and run at idling speed.
–  Plug tailpipes during leak test (e.g. with cloth or plug).
–  Listen for leaks at connection points between cylinder head/exhaust manifold, exhaust manifold/intermediate pipe and turbocharger/intermediate flange etc.
–  Rectify any leaks that are found.
   

Exhaust manifolds and intermediate pipes > < Stress-free alignment of exhaust system - vehicles with SCR catalytic converter