I believe I'm getting good spark, but that's just while cranking it over with a plug out. I'm not sure how good or stable the spark is while running. I don't really think the coil is the culprit though, but I figured it was an easy $18 process of elimination, since it obviously wasn't wired in right anyway.
The engine does warm up very quickly by the way, much quicker than I would think it should. And no, no choke ever. It won't start I use the choke, even when cold.
My two best guesses at this point are exactly as you said Steve, I'm wondering if someone screwed with the carb and drilled something out on it. My other guess was the distributor having an issue somehow. I didn't think about the bushings on it.
Royse, I've cleaned all the filters and screens. The sediment bowl and screen look brand new. I believe they were replaced when the carb was rebuilt.
I have very good flow. Someone put an inline fuel filter in front of the sediment bowl. So I pulled each part of in turn, and checked flow. I checked the fuel filter, blew through it, no restriction at all. I checked flow with the bowl off and it's flowing at about the same rate as directly from the fuel line, and the drain on the carb is the same. I haven't measured it, but it puts out about a steady 1/4" stream. I'll try draining it in a pint jar and checking it. The inside of the gas tank looks new.
The history of the tractor is that it was in a barn in a farm somewhere, a guy bought it just because he liked it about 5 years ago, paid to have a bunch of work done to it, including wiring etc. Then it sat, no one used it, he died, and his sons sold it. I believe before they sold it the sons paid to have it gotten running again, probably why the carb rebuild looks so fresh. The wiring conversion on it appears quite a bit older, the carb looks fresh, in the past few months or less. Everything is bright and shiny on the carb.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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