I own a 2001 F-150 with the 4.6 and and hear all the horror stories, so I didn't want to mess with it myself. I took it to the local Ford dealer and they recommended performing a "motor vac" that supposedly cleans the combustion chamber and in the process the spark plug threads. My truck has 151,000 miles on at the time, plugs never been changed. They did the "motor vac" and changed the spark plugs and installed new coil boots, to my knowledge they had no issues removing the old plugs. Maybe they B.S.ed me on the motor vac, I don't know, but I do notice the engine runs smoother and picked up a little mileage but I've only put on 1,000 miles since the work was done.
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Today's Featured Article - Restoration Story: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
... [Read Article]
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