S4 V8-4.2L (BHF) (2004)
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Air Injection Control Valve: Testing and Inspection
Combination Valve For Secondary Air Injection (AIR), Checking Function and For Proper Seal
Combination Valve For Secondary Air Injection (AIR), Checking Function And For Proper Seal
Special tools, testers and auxiliary items required
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Hand vacuum pump V.A.G 1390
Requirements
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No leaks in vacuum lines or hose connections.
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Vacuum lines not clogged.
Work sequence
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Remove rear engine cover - arrows -.
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Remove cover - 1 - in engine compartment (right side).
