Question about 2004 Ford F150
More than likely it is a vaccuum leak. Get a small torch propane bottle. You want a tip on it so you can waft the propane but Do Not Ignite It. Go around the intake manifold, and vaccume lines around the engine. If it revs up you have found you leak.
Posted on Sep 11, 2010
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Posted on Jan 02, 2017
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