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Old 04-22-2013, 01:40 AM   #3
matmatician
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It may be your intake manifold if they have the same issue that the 2.0 duratec has. They have little runner flaps (kinda like the butterfly valves on a carbeuretor) and those tend to wear out between 80-100k miles. If thats the root of the problem, dont worry about it. Like I said though, i'm not sure that a problem on the Zetecs, it may only be for the Duratecs.
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