Fuel System Bleeding

Fuel system, bleeding

Engine codes BEV, BGD
Special tools, equipment, testers, measuring instruments and auxiliary items required





^ VAG1348/3A Remote control
^ VAG1348/3-2 Adapter cable
^ VAS5226 Diesel suction pump
^ VAG1318/20 Adapter
^ VAG1318/20-1 Adapter

Requirements





^ Fuses must be OK
^ Battery voltage must be at least 11.5 V
^ Fuel pump relay must be OK

Work sequence
^ Remove cover in front of fuse holder.





^ Pull fuse No. 28 out of fuse holder.
^ Connect remote control VAG1348/3A with adapter cable VAG1348/3-2 to contact 28a to fuel pump and battery positive (+).
^ Remove pressure hose from secondary air injection pump to combination valve.





^ Unscrew cover cap (arrow) of breather valve.





^ Screw adapter VAG1318/20-1 onto adapter VAG1318/20.
^ Turn valve (at T-piece) counter-clockwise until it is completely open.





^ Screw adapter VAG1318/20 hand tight onto breather valve.
^ Connect hose of diesel suction pump VAS5226 as shown.
^ Turn valve (at T-piece) clockwise into breather valve onto limit stop.
^ Check adapters and hose connectors for leaks.
^ Operate remote control VAG1348/3A until bubble-free fuel comes out of breather valve.
^ Turn valve (at T-piece) counter-clockwise again until it is completely open.
^ Clamp-off hose of diesel suction pump VAS5226 (e.g. with hose clamp 3094) and disconnect it from adapter VAG1318/20-1.
^ Unscrew adapter VAG1318/20 from breather valve.