first thing to do is get the compression test done right, till then its anybody's guess at the problem. remove all plugs and check each cyl. with about 4-5 compression strokes. a good engine and you will be at top compression in about 2 strokes. if that cyl. is low then pull valve cover as mentioned and look at rockers while cranking. a worn lobe will cause valve to not open or just barely move. nothing unusuall for the cam to be worn on a 350 espessially ones that idle lots. but it can be any thing from a bad plug, wire, cap , rotor,ext. you said yourself sometime it runs normal, and valve train will not do that. when its worn its worn.
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Today's Featured Article - Tractor Generators - by Chris Pratt. As a companion to the articles on three-brush and two-brush generators, it seemed fitting that we should provide our readers with a description of how a generator works in lay terms. The difficulty with all those "theory of operation" texts is that they border on principles of electricity or physics and such. Since I know nothing of either, you will have to put up with looking at the common sense side of how generators work which means we "
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