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Servicing secondary air system > < Stress-free alignment of exhaust system

A4 Cabriolet Mk2

Checking exhaust system for leaks
Checking exhaust system for leaks
–  Start engine and run at idling speed.
–  Plug tailpipes with cloths or stoppers until check is completed.
–  Listen for noise at connection points (cylinder head/exhaust manifold, exhaust manifold/front exhaust pipe, etc.) to locate any leaks.
–  Repair any leaks that are found.
   

Servicing secondary air system > < Stress-free alignment of exhaust system