Classic Audi » Technical » Mech/Tech » Engine » urQ - What is this pipe please??

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Old 12-12-18, 05:06 PM   #1
oliverjl
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Default urQ - What is this pipe please??

Please can somebody tell my what the black plastic pipe poking through the fuel tank outlet rubber is?? It seems to come down from under the rear bulkhead, should it be attached to anything under the car? I haven’t made a careful enough mental note when I removed the fuel tank... it’s an ‘87 MB Quattro.
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Old 12-12-18, 06:32 PM   #2
4v6
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Tank vent pipe.
Mines got a rubber cone attached to it presumably to prevent blockage via icing,,,,it gets very cold due to evaporation of vapour and can freeze up.
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