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By means of the spark plugs firing which ignites the fuel air mixture. This explosion drives the pistons downward and turns the crankshaft. The crankshaft turns the transmission which drives the wheels.

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Q: How does a a spark ignition engine run?
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What are symptoms of a bad ignition coil?

A bad ignition coil will cause your engine not to have any spark. Without any spark the engine cannot start or run.


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A 'spark ignition ' engine is your regular gasoline engine as opposed to a diesel, which is a 'compression ignition' engine


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