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Farmall & IHC Tractors Discussion Board |
Re: Identifying coil voltage
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Posted by Bob M on January 07, 2004 at 11:54:10 from (165.170.128.65):
In Reply to: Identifying coil voltage posted by jim on January 07, 2004 at 05:23:05:
Doug’s advice is right on. However if you don’t have an ohmmeter and your tractor has a numbered (not zoned) ammeter, you can determine what coil you have by simply watching the ammeter while you turn on the ignition. If the ammeter shows 3 – 4 amps discharge you have a 12 volt coil. However if it shows a discharge of 6 amps of or more you’ve got a 6 volt coil – plan to add a ballast resistor or swap it for a 12 volt coil! To your misfiring and plug fouling issues, presuming your carburetor is properly adjusted it means the spark plugs that are too cold. Switching to plugs 1 or 2 heat ranges higher should eliminate the problem.
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