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Wiring and component check with test box V.A.G 1598/42 > < Removing and installing high-pressure pump

A4 Cabriolet Mk2

Bleeding fuel system
Bleeding fuel system
In order to prevent damage to the catalytic converter, the fuel system must be bled after working on the fuel pipes or the fuel filter.
Procedure
–  Start engine and let it run at moderate speed for several minutes and then switch off.
  Note
To begin with, the engine may not run smoothly due to air in fuel system.
–  Check fuel system for leaks.
–  Interrogate fault memory and erase, if necessary.
–  After completing the repair, road-test the vehicle. Accelerate with full throttle at least once. Then inspect fuel system for leaks again.
–  Interrogate fault memory and erase, if necessary. If you have erased fault memory, you must then generate readiness code in engine control unit in “Guided fault finding” mode → Vehicle diagnosis, testing and information system VAS 5051.
   

Wiring and component check with test box V.A.G 1598/42 > < Removing and installing high-pressure pump