Suck, squeeze, bang, blow! Connected to the power distributor, the spark plug causes the fuel to ignite by sparking about 1,500 times a minute. Which causes the piston to move back and forth and propel the car. It is a small but crucial and sophisticated component, made up of five types of metal and ceramic. Most cars have four spark plugs. They are a team: if one is missing, the engine will stop running.
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