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Message: <blockquote data-quote="brentbaldwin" data-source="post: 1054532" data-attributes="member: 78063"><p>I had an '07 4x4 with the same miles and the same issue, except it also misfired frequently. My "cheap" mechanic said it was internal, so I took it to a mechanic in Watertown (TN) who is a former Ford mechanic. He diagnosed it as a burned valve from a misaligned plug. He recommended that I change out the chains while he had the top end open. He charged me $4K to fix the head and valve and to replace the timing chains. It ran great for another 30K miles but then the tranny went out (the truck was rough and rusty and had many other nagging issues, so I sold it and just got an '05 with few miles). So, if you find the right mechanic, I say fixing it is the way to go if the rest of the vehicle is sound.</p></blockquote><p></p>