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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Fuel Supply >> 20 Fuel Supply >> Fuel Delivery Unit/Fuel Level Sensor >> Fuel Line To Metering Pump, Bleeding

Fuel Line To Metering Pump, Bleeding

Special tools and workshop equipment required 

NOTE:

After working on the fuel delivery unit, the fuel supply line to the metering pump must be bled on equipment levels with a parking heater.

Procedure 

-- Connect the :VAS5226  to the compressed air.

Fig 1: Identifying Metering Pump -1- And Fuel Supply Line -2-
GWWA20-10396Courtesy of AUDI OF AMERICA, LLC

-- On the metering pump -1- remove the fuel supply line -2- from the fuel tank.

-- Connect the :VAS5226  to the fuel supply line using the adapter from the :VAS6213  and bleed it by extracting briefly.

-- Re-install the fuel supply line to the metering pump.

-- Switch on the parking heater and let it run approximately 10 minutes at full load.