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Know Your Spark Plugs

Spark plugs are one of the most important components under the hood because of their effect on engine performance, fuel economy and emissions. In the past, a car couldn’t run if the spark plugs were faulty. Today, electric ignition systems make vehicles a bit more resistant, but fouled spark plugs can affect your performance, fuel mileage and engine performance. Keep your vehicle at peak performance by replacing them now.


It's expected that plugs will fail over time due to the electrode being eaten away by combustion inside the engine. However, there are many other problems with the car that can cause a spark plug to fail, so they actually serve as a good diagnostic tool for other parts of your car. The Car Care Council recommends checking your spark plugs every 12 months or 12,000 miles, but be sure to read your owner’s manual for specific recommendations.


Replacing spark plugs is a maintenance job many drivers can handle on their own. It's not complex and requires very little knowledge of the engine. Many mechanics include spark plug replacement as part of a normal tune-up, so you can also let the professionals handle the job.


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