New Beetle L4-1.8L Turbo (AWP) (2003)
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Disconnect connectors from fuel injectors.
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Remove fuel rail complete.
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Disconnect vacuum hose from fuel pressure regulator.
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Lift fuel rail with fuel injectors off intake manifold and support it.
Checking for leaks
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Initiate output Diagnostic Test Mode (DTM) (fuel pump must run). See: Computers and Control Systems/Testing and Inspection/Scan Tool
Testing and Procedures/Output Diagnostic Test Mode (DTM)
NOTE: This work sequence allows the fuel pump to run when the engine is not running.
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Check fuel injector for leaks (visual check). Only 1 to 2 drops per minute must emit from each valve when fuel pump is running.
If the fuel loss is greater:
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Switch off ignition.
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Replace malfunctioning fuel injector, item 10.
Pay attention to the following when installing the fuel injector:
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Replace O-rings on all fuel injectors and lightly moisten with clean engine oil.
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Insert fuel injectors vertically and in the correct position into the fuel rail and secure with retaining clips.
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Install fuel rail with secured fuel injectors onto intake manifold and press in evenly.
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The connectors must audibly engage in the fuel injectors when pushed on.
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, Checking and Erasing DTC Memory. See: Computers
and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic Trouble Codes
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Read readiness code. If DTC memory has been erased or Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive,
readiness code must be generated again.
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
Checking injected quantity
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Insert fuel injector to be checked in a measuring glass of VAG 1602 tester for injected quantity.