You turned the key/ignition switch on, used the jumper wire to engage the starter and crank the engine, then removed the jumper, correct? If it stayed running after you jumped the solenoid to start it (without a jumper wire feeding power to the coil) it would seem your ignition switch and the wire to the coil from it are ok. If that is the case your problem is somewhere in the starter circuit. The other small terminal on the solenoid should be for a resistor bypass, it does not control your ignition, it will run without that bypass hooked up as long as the power wire from the ignition switch goes to the coil. It only supplies power to the coil (on the same coil terminal as the wire from the ignition switch) when the solenoid is energized to power the starter. If you check it without a wire hooked to it, a test light should only light on that solenoid terminal while the solenoid is engaged (engine cranking). When the engine is running the ignition coil is supplied by another wire controlled by the ignition switch. When you turn the key on does the terminal on the coil that has the wire from the ignition switch (not the terminal with the wire going to the distributor) have steady power?
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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