Hi, I am John Mc, a Ford dealer tech. I hope I can help you quickly and accurately. One moment while I work on your problem.
Yes, that is the easiest way. Use a spark plug socket, and a flex head ratchet if you have one. It is still a pain but you can remove the rubber cover in the fender well then you can get your hand back there. I also suggest you do this with the engine cold so the manifold doesnt burn you.
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