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www.reference.com/article/spark-plugs-cd172038b0fa5110

A spark plug is a device that produces an electrical spark, which ignites the mixture of fuel and air in the engine's combustion chambers. A spark plug initiates the combustion in the internal combustion engine.

www.reference.com/article/function-spark-plug-b5838ae66a54efbe

The function of a spark plug is to produce the sparks necessary to ignite the gas and air in the engine, initiating a combustion reaction that provides energy to run the automobile. Spark plugs are designed to fit perfectly into each cylinder of the motor.

www.reference.com/world-view/numbers-spark-plugs-mean-b6ad7223e0b1fe37

The numbers on spark plugs indicate properties such as spanner width and design, heat rating, thread length, construction features and electrode distances. Different manufacturers use similar coding, which makes it easier to interchange brands if need be. Measurements a...

www.reference.com/article/change-spark-plugs-a4ae10a8f55f316f

There are several steps to changing spark plugs, beginning with making sure the engine is completely cool. Next, remove one spark plug wire by gently lifting straight up from the spark plug. It is important to change one plug at a time to avoid mixing up the spark plug ...

www.reference.com/article/clean-spark-plugs-b752fee21b12d875

To clean spark plugs, disconnect the cables, remove the spark plugs, scrub them with sandpaper and a wire brush, wipe them with solvent, reinsert them, and reattach the cables. This 45-minute process requires work gloves, a bench vise, sandpaper, a brush, a ratchet wren...

www.reference.com/article/install-spark-plugs-b121be0f50ccf73b

To install a spark plug, remove the wire from the existing spark plug, and remove the plug with a spark plug socket. You need a spark plug socket with an extension, electrical or masking tape, and torque wrenches.

www.reference.com/article/long-spark-plugs-last-5d3595bd7c3db40a

The length of time that spark plugs last depends on the number of miles driven and the type of spark plug a vehicle has installed. Spark plugs are typically changed every 45,000 miles, but some spark plugs are advertised to last as long as 100,000 miles.