Auto >> AutoSPT >  >> Engine

In a nonelectronic small engine ignition system which of the components is energized by power source first?

In a nonelectronic small engine ignition system (like the points-and-condenser system found in older engines), the coil is the first component energized by the power source. The power source (battery or magneto) initially provides power to the coil, building up a magnetic field. The points then open, interrupting the current flow and causing the high voltage spark to jump across the spark plug gap.