Hopefully, you installed non-resistor spark plugs and copper core plug wires, but I really don't think that is the problem here. What I think might be happening is that since the engine has been setting for so long, there is now some rust in those cylinders, and of course there is always a carbon build-up. I think little specks of the rust and carbon are breaking loose and then lodging temporarily in the gap of your spark plugs. With the actual compression as high as it is, those specks are eventually blown out, and then all is well again for at least awhile. The solution might be to get the engine good and warm, and then make it work hard for 30 minutes or so.
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Today's Featured Article - Talk of the Town: How to Remove a Broken Bolt - by Staff. Another neat discussion from the Tractor Talk Discussion Forum. The discussion started out with the following post: "I have an aluminum steering gear housing with a bolt broken off in it. The bolt is about a 3/8" x 1 1/2" bolt. I've already drilled the center of the bolt out with about 7/64" drill bit the entire length of the bolt. Only one end of the bolt is visible. I tried to use an easy out but it wasn't budging and I didn't want t
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