Incident like many others I have had my 1997 ford expedition xlt blow a spark plug out of the cylinder head. The vehicle was running fine and trouble free when a pop from under the hood and a loud banging noise came from the engine head. The vehicle was towed to the repair shop ; who in turn called the local ford dealer. The reply was they never heard of this problem before. My local service tech said the repair kit alone would cost $1,000,00. To repair it he said that ford had only used 3 threads in the head that...
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failed, but are now replacing them with a 7 thread head., This tells me that they are very aware of the problem but are willing to leave their customers out to dry.. I guess the scary part about that is I still have 4 more 3 thread spark plug holes to worry about blowing out,.I absolutely feel this should be the responsibility of ford motor company who is looking for the american public to buy it's trucks. Damage resulting it will cost me as little as $2,500.00 To repair the current problem ( and no guaranty it won't happen again). Or up to $5,500.00 To replace the built tough 5.4 Triton engine. *Tr