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Service TDI injection and glow plug system 4 cyl. 2.0 ltr. 4 valve common rail CAG CAG CAH CAH CAG CME Engine ID A B A B C A Edition 12.2012 Service Department. Technical Information Service List of Workshop Manual Repair GroupsList of Workshop Manual Repair GroupsList of Workshop Manual Repair Groups Repair Group 23 Mixture preparation injection 28 Glow plug system Technical information should always be available to the foremen and mechanics, because their careful and constant adherence to the instructions is essential to ensure vehicle road worthiness and safety. In addition, the normal basic safety precautions for working on motor vehicles must, as a matter of course, be observed. A005A402020 Audi A4 2008 ➤ , Audi A5 Cabriolet 2009 ➤ , Audi A5 Coupé 2008 ➤ TDI injection and glow plug system 4 cyl. 2.0 ltr. 4 valve common rail Edition 12.2012 Contents 23 Mixture preparation injection 1 1 Safety precautions and rules for cleanliness 1 1.1 Safety precautions when using testers and measuring instruments during a road test 1 1.2 Safety precautions for vehicles with start/stop system 2 1.3 Safety precautions when working on the fuel system 2 1.4 To avoid any risk of injuries to persons and/or damage to the injection and glow plug system, always observe the following safety precautions 3 1.5 Checking vacuum system 4 2 Overview of fitting locations 5 3 System layout 13 4 Fuel system exploded view 15 5 Bleeding fuel system 18 6 Air cleaner 19 6.1 Air cleaner exploded view 19 6.2 Removing and installing engine cover panel 20 6.3 Removing and installing air filter element 20 6.4 Removing air cleaner bottom section 21 7 Intake manifold 24 7.1 Intake manifold exploded view 24 7.2 Removing and installing intake manifold 24 7.3 Removing and installing fuel rail 28 8 High pressure pump 31 8.1 Removing and installing high pressure pump 31 8.2 Performing first fuel filling operation after i