S8 D3 BSM Vacuum system
Hi folks,
Can someone point me in the direction of a circuit / layout of the vacuum pipes on the 5.2 D3 S8?
I can trace these lines easily enough under the hood to secondary air control and the air valves on either air filter housing all originating from the inlet manifold however, vacuum hoses disappear into the wheel arch going somewhere else. What else is connected?
I’m trying to resolve a vacuum leak and when I remove the pipe from the inlet manifold and connect my manual vacuum pump into the circuit there is air getting in somewhere...
Any thoughts?
Cheers,
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Present cars
Daily driver: BMW e65 730d
Batmobile: 2006 S8, D3, 4E 5.2L V10 BSM with (loud) Miltek SS exhaust, Carbon Fibre trim, Alcantara headlining, soft close and keyless entry. 
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