S4 V8-4.2L (BHF) (2004)
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Remove bolt - arrow - at oil dipstick guide tube.
Note: Guide tube remains inserted in upper part of oil pan.
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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.
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Remove bolts - arrows -.
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Remove air guide - 2 -.
CAUTION: Fuel system is under pressure! Before opening system, place clean rags around the connection. Then release pressure by carefully
loosening connection.