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Old 04-04-2025, 11:47 PM   #1
Detour
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Join Date: May 2024
Location: Appleton, WI
Posts: 37
Lose spark after cranking

The weekend project has turned into 5 months and I can't remember what things looked like for reference. I replaced the starter, alternator, points, cap, rotor, condenser, wires, plugs and found most of the wiring under the hood melted. So then I began cleaning it up and replacing with proper colors according to a wiring diagram I found on this forum.

Now the problem is I have spark during crank but as soon as you let go of the key you lose the spark. I have 9.8v from the starter to + coil during crank, but again 0v when you let go of the key. What I assume is the factory resistor wire is still in place going to the coil (cloth style insulation wire that goes to the correct pin on firewall block).

Battery is good 12.5v or better depending on how recently it came of the battery tender.

Any guess on what I am missing here.
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