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Audi A4 B6 Fixing Common Vacuum Leaks (2002-2008) | Pelican Parts DIY Maintenance Article
Audi Workshop Service and Repair Manuals > A4 Mk2 > Power unit |<br><br>4-cylinder TDI unit injector engine (1.9 ltr.; 2.0 ltr. 2-valve), mechanics |<br><br>Exhaust system |<br><br>Exhaust gas recirculation system (engine codes AVB,