Cyclinder 6 Misfire - After coolant line bursted?

My 2006 ford Taurus had one of the coolant lines bust, which i have since replaced. When the coolant line busted, the car did not overheat, but began misfiring. Cylinder 1,2,3 were misfiring at random intervals, so I replaced the coil pack. Those cylinders are now not misfiring, however, cylinder 6 is. I have replaced all the spark plugs, and still this one cylinder is misfiring. What else could it be? What is the worst case scenereo?

Cylinders 2 and 5 have the greatest risk of head gasket problems from the coolant loss itself, so I'm pretty sure the problem is still in the ignition. The spark plug leads are certainly a concern and if they are original this is a good time to replace the set - 12 years is a mighty good run for spark plug leads. If for some reason that doesn't do the trick it is time to look at the low voltage connector and wiring for obvious signs of being wet.

Are the coil packs interchangable? If so can you swap them and see if the problem follows the coil?

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  • Cyclinder 6 Misfire - After coolant line bursted? - 1 Y 2006 ford Taurus had one of the coolant lines bust, which i have since replaced. When the coolant line busted, the car did not overheat, but began misfiring. Cylinder 1,2,3 were misfiring at random intervals, so I replaced the coil pack. Those cylinders are now not misfiring, however, cylinder 6 is. I have replaced all the spark plugs, and still this one cylinder is misfiring. What else could it be? What is the worst case scenereo?
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