Stan there are a number of reasons that sparkplugs get to be an issue to remove. One is the long time between removing allows for build up that actually makes removing them difficult. The obvious and simple solution would include removing the plugs at more frequent intervals that don't allow such build up. A dear friend of wine who was an engineer at Ford has told me that Fords since the late 1990's have had not much success removing the sand from the castings. This causes what he calls "Errosion corrosion" as the jacket water carrys the sand against the inner surfaces of the heads and intake manifolds etc. This is more apparent at the thermostate when the metal is eaten away at the neck, but, I imagine it may also make the area around the spark plug tubes weaker. The only think I could recommend if this is happening is if you remove the plugs at greater frequency, apply a small (and I mean small) amount of anti seize to the threads of the plugs. Obviously you will not want the very first thread of the plug coated, but, this could help some. Personally, I have my doubts that errosion corrosion is causing much of this issue. I would think most of the problem is the build up on the spark plug. Now I have done work on Triton V10's and since I don't see the truck until it no longer will tow the boat or tractor etc, it is already stuck. I turn it a little out, and then a little in etc until it comes out. I have not yet broken a head, or had to use an impact or anything. It is just hard, and since it was Thanksgiving I am thankfull that no one who has asked me has had a van. The only guy with a van that had a Triton V8 was my engineer buddy. Serious, go figure, and his intake manifold was eaten away around the thermostate.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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