A8 Quattro Sedan V8-4.2L (BVJ) (2008)
Air Injection Control Valve: Service and Repair
Version 1
Secondary Air Injection Right Combination Valve
Removing
‹› During installation, all cable ties must be re-installed at the same location.
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Pull rear engine cover off - arrows -.
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Free up fuel line and line to EVAP canister on air guide pipe.
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Remove vacuum line - 4 - to air guide hose from suction jet pump.
CAUTION!
Risk of violating emissions legislation.
‹› Do not open hose connection - 2 -!
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Lay aside air guide hose with connected crankcase ventilation hose - 3 - by loosening hose clamps - 2 and 5 -.
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Remove noise insulation by loosening fasteners - 1, 2, 4 -.