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Electronic ignition differs from breaker "points" type of older ignition. Power pulses to charge the ignition coil are controlled by electronic means and does a better job of creating the maximum voltage to be delivered to the spark plugs. Some older types of electronic ignition have a mechanical distributor (a round contrivance that has all the spark plug wires coming off of it). Newer distributor-less electronic ignitions have no mechanical distributor. Instead they make use of coil packs that typically feed spark to two plugs at once. One plug fires at the usual time while the other is 180 degrees away on another cylinder's exhaust stroke. This has the effect of cleaning the plug and allows the maker to use half as many coil packs as there are cylinders. Some direct fire ignitions have a coil mounted directly on the end of the spark plug, one per cylinder.

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