Spark Plug
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Spark plugs receive electrical charge from the distributor or coil to create a spark that causes combustion. They consist of a terminal at one end that receives the charge, and a center and ground electrode that arc to create a spark. Spark plugs wear out over time as the electrode material wears down. They may also be fouled by overly rich fuel mixtures or oil contamination. If you notice misfiring or if your vehicle has difficulty starting, check the condition of your spark plugs. Replacing spark plugs and wires are part of a tune-up, so if your spark plugs need to be replaced, you should also consider replacing the spark plug wires. Shop O'Reilly Auto Parts for spark plugs, wires, and other ignition components for a complete tune-up or repair.
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