S4 Quattro Wagon V8-4.2L (BHF) (2008)
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Remove rear engine cover - arrows -.
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Remove front engine cover - arrows 1 and 2 -.
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Remove cover - 1 - in engine compartment (right side).
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Disengage Evaporative Emission (EVAP) Canister Purge Regulator Valve (N80) - 1 - from air guide.