Jetta L4-1.8L Turbo (AWD) (2000)
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Detach pressure hose -3- from secondary air pump motor and blow in lightly -arrow- combi-valve must be closed.
Note:
To release, press together the buttons on the hose coupling.
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operate hand vacuum pump. Combi-valve must open.
If combi-valve does not open:
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Replace the combi valve.
