A4 Quattro Sedan L4-1.8L Turbo (AEB) (1998)
Fuel Filler Neck: Service and Repair
Component Overview (With ORVR System)
1
-
Expansion tank
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Secure wires to expansion tank using adhesive tape
2
-
Bleed lines
-
To connector line at top of fuel tank
3
-
Tank protection valve
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Clipped to fuel filler-neck
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Ventilates fuel tank for pressure compensation
4
-
Gravity valve
-
To remove valve, unclip upward out of the filler-neck
-
Check valve for flow:
Valve vertical: Flow
Valve tilted 45°: No Flow
5
-
O-ring
-
Replace
6
-
Ground connection
-
Location See Fig. 2 below
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Ensure tight fit of metal ring on fuel filler-neck
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Check chamfer on protective plate (item 7).
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After installing, check continuity between metal ring on fuel filler-neck and chassis Ground point.
Specified value: approx. 0 ohms
7
-
Protective plate
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For fuel filler-neck
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With Ground connection
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Before threading in mounting screw (item 10 in fig. 3 below), check for tight fit on screw eye of Ground connection.
8
-
Sealing ring
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Installed position: Sealing lip points to fuel filler-neck
9
-
O-rings
-
Different sizes
Replace
10
-
Bleed valve
-
Removing, installing, checking - see Fig. 1 below.