Eurovan MV V6-2.8L (AXK) (2002)
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Connect VAG1390 hand vacuum pump at vacuum hose (arrow) to combination valve.
Note:
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Do not use pressurized air for the following test!
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Remove intake hose to Secondary Air Injection (AIR) pump motor at upper air filter housing (arrow) and blow into it with light pressure.
Combination valve must close.
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Operate vacuum pump. Combination valve must open.
If combination valve does not open:
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Replace Combination valve.
