On 4.0l bi-turbo FSI engines, the pipe on the impeller side of the bank 2 turbocharger looks discolored...
Audi technical service bulletin A211317 2034999- for 2013-2015 Audi A8, 2013-2015 Audi S6 and 2013-2015 Audi S7 and others.
- Bulletin number
- A211317 2034999-
- Component
- Engine and engine cooling: engine: gasoline: turbo/supercharger
- Summary
- On 4.0l bi-turbo FSI engines, the pipe on the impeller side of the bank 2 turbocharger looks discolored when compared to the pipe on the bank 1 turbocharger. The crankcase breather is only connected to the bank 2 turbocharger inlet. Blow-by gases from the crankcase breather discolor the pipe. This is a normal condition.
Owners of these vehicles have filed 171 complaints in the engine category.
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