I had the entire intake manifold replaced by a mechanic and now it misfires on 2005 Ford Explorer

What could the problem be. It wasn't shaky until after he replaced the intake manifold. It happens when I drive my vehicle. Ive taken it back 4 times. First they said that it was water on the spark plug and then there was water in coil number 7.

by in Visalia, CA on May 30, 2013
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1 answer 1 comment
ANSWER by , May 30, 2013
POSS VACCUM LEAK OR MISROUTED VAC LINES OR BENT INJECTOR PRONGS
COMMENT by , May 31, 2013
If not fixed in a timely matter can this be harmfull to my car and about how much does this cost to get it checked out and fixed?