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Audi Workshop Service and Repair Manuals

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Exhaust gas recirculation system - vehicles with engine code letters ANA > < Stress-free alignment of exhaust system

A4 Mk1

4-Cylinder engine (2-valve), Mechanics
Removing and installing parts of exhaust system
Checking exhaust system for leaks
  • ‒ Start engine and run at idling speed.
  • ‒ Plug the tailpipe (e. g. with rags or stoppers) and leave plugged until the check is complete.
  • ‒ Listen for noise at the connection points (cylinder head/manifold; manifold/front exhaust pipe; front exhaust pipe/catalytic converter etc.) to locate any leaks.
  • ‒ Rectify any leaks that are found.

Exhaust gas recirculation system - vehicles with engine code letters ANA > < Stress-free alignment of exhaust system