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You need to take it to a Ford dealership with service department, they can then put your vehicle on a machine that they hook up to your vacuum system and pump smoke through it to find the leak. Usually cost like $100.00

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โˆ™ 2006-03-02 03:31:11
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Q: You have a vacuum leak in your 1990 mercury sable station wagon and you can't find where it leads to?
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