Problem overview
The valve cover gaskets may leak oil into the spark plug wells, shorting out the spark plugs, causing a misfire, and illuminating the Check Engine Light. Commonly the spark plugs and ignition coils or wires will require replacement, along with resealing the valve cover to correct this concern.
32 people reported this problem
17 commentsFord Thunderbird vehicles with this problem
Average mileage: 81,039 miles
(35,000 - 180,000)
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