YES A magneto indeed has a coil inside, how else you think it steps low voltage up to several thoudand volts necessary to arc current across a spark plug gap DUHHHHHHHHH
Its visible in the picture El Toro posted with its visible Wico lettering.....
It doesnt look like a typical tall thin can coil thats used on coil distributor ignitions, its more circular (actual windings) and has an iron core that goes through its center. It has a low voltage primary winding in the points circuit and a high voltage secondary winding whose output goes to the distributor rotor and eventaully via plug wires to the plugs.
If its a Wico X mag you see it if you remove the cap and its HV output button/terminal is obvious and where the caps lil springy contactor mates up.
If a mag is working correctly the spark should be a brigh visible blue and NOT any faint thin wimpy yellow spark.
Typical mag problems are burned or incorrect gapped points or a bad condensor or a bad coil.
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Today's Featured Article - The Fordson F Ignition System - by Anthony West. A fellow restorer contacted me earlier this year asking for some help and advice on a model F that he was restoring. He had over a period of months spent a fair amount of his hard earned cash on replacement parts for the old "trembler" ignition. Sadly though all his efforts seemed to be a waste of time and money as he still couldn''t get the temperamental old thing to run correctly!! If i said that this was a little frustrating for him that would be "conservative" in fact the problem had reduce
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