A3 Quattro V6-3.2L (BUB) (2008)
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Fuel Filter: Service and Repair
Fuel Filter with Fuel Reduction Valve Assembly Overview, FSI From 06.04 and TFSI
Fuel Filter with Fuel Reduction Valve Assembly Overview, FSI from 06.04 and TFSI
In fuel systems without return flow for vehicles with FSI engine as of 06.2004 and TFSI engine, fuel reduction valve is positioned in fuel filter. In this
system, only the supply line is routed forward to the engine compartment. If there is a pressure increase in the supply line above 6 to 6.8 bar, the fuel
reduction valve opens. Excess fuel is routed into a return line from the fuel filter and back into the fuel tank.
1
Fuel Filter
‹› With fuel reduction valve, 6 to 6.8 bar pressure
‹› Direction of flow is marked with arrows
‹› Do not interchange connections
‹› Installation position: Pin on filter housing must engage in recess of guide on filter bracket => [ Installed location: ] See: Fuel Filter with Fuel
Reduction Valve, with FSI From 06.04 and TFSI.
‹› Removing and installing => [ Fuel Filter with Fuel Reduction Valve, with FSI from 06.04 and TFSI ] See: Fuel Filter with Fuel Reduction
Valve, with FSI From 06.04 and TFSI
2
Fuel supply line
‹› Black
‹› From fuel tank
