Johnston Auto Repair

A spark plug is one of the most underrated car components. They play a crucial role in igniting the air-fuel mixture within the engine cylinders to get and keep your vehicle moving. With time, your spark plugs might become fouled and dirty, impacting your engine performance. When a spark plug is fouled, it is usually covered with such substances as fuel, carbon, or air. At this point, the only way you can enhance your engine performance is by having your spark plugs cleaned without causing any damage to the electrodes.   Most manufacturers will recommend that you have your vehicle's spark plugs replaced every 30,000 - 50,000 miles. If you haven't had yours checked in quite some time, you might want to consider contacting our mechanics now.   Here are some of the signs that your spark plug is failing and needs a replacement:   Reduced Gas Mileage   If you find yourself making trips to the gas station a little too much than usual, you ... read more