Vehicle Service and Repairs


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Service Term to Know

Ignition Coil


The ignition coil converts the vehicle’s 12 volts to the more than 10,000 volts required to produce an effective spark in the spark plugs, which in turn ignite the air-fuel mixture in an engine’s cylinders. Some cars use one coil, but increasingly, each cylinder bank, pair or even individual cylinder get its own coil.

A failing coil can result in anything from rough operation or diminished acceleration to a complete engine stall (or a failure to start). 

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