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First Extended Service Corporation
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First Extended Service Corporation
First Extended Service Corporation First Extended Service Corporation First Extended Service corp. Denying claim due to wrong spark plug

First Extended Service Corporation denied my claim to fix my 2002 mercury mountaineer. There was damage to the cylinder head from a blown spark plug. They say because I used Autolight spark plugs and the thread count is shorter than the Ford Recomended Motorcraft plugs, this caused the plug to be ...