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Old 11-26-2013, 12:32 PM
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It helps to understand the coil as a sort of mini Tesla Coil. The condensor (old name for capacitor) can be seen as part of a reasonant system on the primary side. Also - and very important - it absorbs the voltage generated by the magentic field collapse on the primary side. Absent the condensor the points would arc big time when opening and burn out quickly.
Also note it is very unlikely for all 4 plug wires to burn out at once. OTOH the wire from the coil can very well burn out and hose up the entire operation. BTDT.
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