Passat V6-2.8L (ATQ) (2004)
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Disconnect connectors -1- from connections -2- on all fuel injectors.
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Remove fuel rail from intake manifold - arrows -.
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Disconnect vacuum hose from fuel pressure regulator.
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Lift fuel rail with injectors off intake manifold and support it.
Checking for leaks
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Initiate output diagnostic test mode using vehicle diagnosis, testing and information system VAS 505, See Adapting functions and components:
Fuel pump must run.
NOTE: This work step allows the fuel pump to run when the engine is not running.
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Check injectors for leaks (visual inspection).
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Only 1 to 2 drops per minute may emit from each injector valve when fuel pump is running.
If the fuel loss is greater:
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Switch off ignition.
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Replace faulty fuel injector.
Checking Injection Quantity
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Place a fuel injector to be tested into a graduated measuring glass of injection quantity test device V.A.G 1602.
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Connect one terminal of fuel injector to be checked to engine Ground (GND) using adapter cables from connector test kit V.A.G 1594C.
