Plug Change
#1
Plug Change
08 GT. 180,000 miles. Second set since new. Motorcraft 514's. First go round at 90,000 other than 3 plugs breaking off, no other hitches. This time, again 3 plugs, but started with a very rough idle and through a #6 misfire code. Removed the plug, cleaned it, and swapped the #6 and #5 coils. Started fine after that and idles normal now. What was that? Computer learning curve?
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