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Mooresville Auto Repair

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When Should I Replace My Spark Plugs?

When Should I Replace My Spark Plugs?

Question I’m confused about when I should get my spark plugs replaced.  What’s the deal? Answer Well it can be confusing because there are several types of spark plugs and some last longer than others.  Your owner’s manual will have a recommendation for when your spark plugs should be changed.  Here’s a little background.  Spark plugs are in the combustion chamber of your engine.  They send a little spark between two electrodes at the end of the spark plug which ignites the gasoline.  This little spark goes off thousands of times a minute.  Over the miles, the electrodes on standard grade spark plugs wear away increasing the gap between them.  When that happens, the spark isn’t as strong, and the fuel doesn’t burn as well. As I mentioned above, there are several types or grades of spark plugs.  The standard grade is copper core.  They are great for quick starts and may last 12,000 to 13,000 miles ... read more


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