Posted by John T on November 13, 2010 at 16:27:42 from (66.244.97.31):
In Reply to: Farmall H wont start posted by krs on November 13, 2010 at 15:51:13:
Usually when a tractor is converetd 6 to 12 and the 6 volt starter still used, theres not such a drastic voltage drop while cranking so as to reduce spark energy significantly. I say that since you indicate the sparks hot when shes not cranking which sounds like a voltage drop while cranking/starter/cable issue. A faulty starter can drag the voltage down so low theres a weak spark when cranking, how well does she crank over????
Is it a 6 or 12 starter and how are the battery cables and connections and grounds??? Id remove, clean n wire brush, n reattach each n every battery n starter n ground cable and each switch connection then try her
What voltage is that new coil, 6 or 12??? Is there an external series Balalst Resistor in the primary ignition circuit???????
A weak spark is often due to burned or corroded points or a weak condensor. You might try to hot wire the coil just in case its a faulty resistive ign switch.
After cheking the coil/voltage and cables n connections and any ballast issues, heres my Ignition troubleshooting procedure.
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