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Removing and installing injectors > < Dynamic check of injectors

A4 Cabriolet Mk2

Checking spray pattern of injectors and checking for leaks
Checking spray pattern of injectors and checking for leaks
Special tools and workshop equipment required
   
t  Injector tester -V.A.G 1322- and pressure pipe -V.A.G 1322/2-
Use injector tester -V.A.G 1322- and pressure pipe -V.A.G 1322/2- for checking the injectors.
  WARNING
When testing injectors, ensure that the jet of fuel does not contact the hands as the high pressure will cause the fuel to penetrate the skin and may cause severe injuries.
l  Pressure gauge switched on
–  Move pump lever down slowly. Read off injection pressure when injector opens. If the pressure does not match the specification, fit a new injector.
  V02-0184
New injectors200 ... 235 bar
Wear limit170 bar

l  Pressure gauge switched on
–  Move pump lever down slowly and maintain a pressure of approx. 150 bar for 10 seconds. There should be no fuel leakage from the injector nozzle.
  Note
This test is only able to check the injection pressure of the first stage.
–  Renew the injector if leakage occurs.
   

Removing and installing injectors > < Dynamic check of injectors