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For More Info visit us at: http://1aau.to/h/eSj/ Avoid these common spark plug installation mistakes that cost you gas mileage on your car or truck! In this video, Len shows you some common installation mistakes that you should avoid making when installing new spark plugs in your car or truck! Spark plugs can be easily damaged, which will create huge headaches and excessive fuel consumption in your vehicle! #shorts

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