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Old 09-24-2021, 09:05 PM   #2
petehoovie
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Default Re: When does the plug fire?

"Every time the points open, the flow of current is interrupted through the coil, thereby collapsing the magnetic field and releasing a high voltage surge through the secondary coil windings. This voltage surge goes out the top of the coil and through the high-tension coil wire. Now, we have the voltage necessary to fire the spark plug"
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