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9 Problems That Could Be Activating Your Car’s Check Engine Light

Bob Vila Logo By Donna Boyle Schwartz of Bob Vila | Slide 3 of 10: A car’s spark plugs provide the electric spark that ignites the fuel and air mixture inside the cylinders. Worn or damaged spark plugs can cause numerous engine issues, including misfiring, a rough idle, hesitation during acceleration, and decreased gas mileage.

Bad Spark Plugs

A car’s spark plugs provide the electric spark that ignites the fuel and air mixture inside the cylinders. Worn or damaged spark plugs can cause numerous engine issues, including misfiring, a rough idle, hesitation during acceleration, and decreased gas mileage.

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