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Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5078 > < Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal

S4 V8-4.2L (BHF) (2004)

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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 -.

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Remove air guide hose - arrows -.

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Disconnect vacuum hose - arrow - at combination valve to be tested.

NOTE:  Left combination valve is shown in illustration.

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Connect hand vacuum pump V.A.G 1390 to vacuum hose of combination valve to be checked.

Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal|Page 5078 > < Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal