Originally Posted by
Scott
Bad coil pack. My Lincoln LS V8 did the same thing a few times.
It is usually from a valve cover leaking into the area where the spark plug screws into the head and shorts out the pack.
Pull the plug wires and look into the holes. If you see one with oil in it there it is. Shitty thing is you will need to replace the valve cover gasket on that side. Make sure to get the Ford ones and not some cheap ones. It is not a hard job, just a lot of time moving shit out of the way.
Not ruling this out, but the motor I have uses the COP coil over plug dealies where there isnt an actual spark plug wire. One of the 8 COPs could still go bad though.. I wish I knew how to tell which one..
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