S4 V8-4.2L (BHF) (2004)
Fuel Gauge Sender: Component Locations
Fuel Delivery Unit and Fuel Gauge Sender, Component Overview
Fuel Delivery Unit And Fuel Gauge Senders, Component Overview
Part I
1
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Sender for fuel gauge -G-
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Clipped onto reservoir housing in fuel tank
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Checking resistance
2
-
Fuel delivery unit
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Can only be replaced together with flange
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Checking fuel pump (electrical test)
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Checking delivery rate
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Checking holding pressure
3
-
Electrical connector
-
For fuel pump and Sender for fuel gauge -G-
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Releasing, see Fig. 1
4
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Flange
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For fuel delivery unit
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Cannot be replaced separately
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Installation position
5
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Breather pipe
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from fuel pressure regulator in fuel filter
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Press release tab on connection piece to disconnect
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do not kink
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clip on fuel tank
6
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Seal
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When installing, fit seal (dry) in fuel tank opening
7
-
Locking ring
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Remove and install using wrench 3087