Wondering if your car's spark plugs need to be changed? This guide breaks down the clear signs to watch for—like rough idling, trouble starting, and poor gas mileage. You'll learn easy ways to check your spark plugs, what common symptoms point to worn-out plugs, and how changing them can boost performance. No jargon—just straightforward facts and tips regular drivers can use. Save time, money, and maybe even your sanity on your next drive.
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