Check the spark at the plug end of each plug wire. It should have a blue hot 1/4 inch spark. Check the points gap, check the distributor shaft for side play. If it's loose, the points will not stay set. Try a used condenser if you have one.
When you turn the gas on, before cranking, does gas begin to drip from the carb?
If so, the carb is flooding. Could be the float is partially sunk, float level too high, the float is bent and touching the inside of the bowl, loose or bad needle valve (be sure the needle slides freely inside the seat and the float tab is not hitting the end of the seat), or trash under the seat. It only takes a tiny speck of trash to hold the valve open. Try draining the carb bowl, sometimes that will flush any trash that may have gotten caught in the needle valve.
If it does not drip before cranking, what you see is fuel draining back down out of the intake, normal following a failed start. But still it should not continue to drip once it has all drained out.
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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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