1999 Mercury Villager Incorrectly installed spark plugs

1999 MERCURY VILLAGER
207,000 MILES • 6 CYL • FWD • AUTOMATIC
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TRACY6987
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I just changed out my spark plug on my 1999 Mercury Villager. Now when I am at a stop I am noticing a "pulsating" or "lunging" feeling/sound. (missfire?/)

I feel like I got the plugs in correctly. Could this be a coincidence or does if definitely sound like something I caused? Damaged plug or wire?
Dec 17, 2008 at 9:03 PM
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MHPAUTOS
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Hi there,

If you have a faulty plug or lead you will get a distinct miss fir on acceleration as the load come on the engine this will cause the plug to miss fire, if this is not the case, check for a vacuum leak or a fuel related problem, start here.

Mark (mhpautos)
Dec 17, 2008 at 10:39 PM