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Vacuum leak on ford explorer

Discussion in 'Ford Trucks' started by murphy4trees, Dec 19, 2007.

  1. murphy4trees

    murphy4trees Member
    Messages: 62

    OK, actually it is a '97 mercury mountaineer, same as an explorer. The big V-8
    It has a bad vacuum leak under the intake manifold, there is a little plastic looking fitting, which is sucking a lot of air, very loud, and seems to be effecting the brakes, especially when backing downhill. This fitting is on the left side, all the way back towards the firewall, going into the side area of the manifold, that is just above the head. It sits back behind two metal lines and is hard to get a good look at. I didn't see any loose air lines near it, and when we plug it it runs quiet for a while, but then the engine dies...

    Any thoughts?

  2. PlowinTheSnow

    PlowinTheSnow Junior Member
    from PA
    Messages: 14

    If your having brake problems maby the vacume line to the brake booster came off.