After thousands of kilometres, the electrodes where the spark is produced can become covered with dirt or carbon deposits, causing the spark plugs to become less efficient and resulting in increased fuel consumption. Here are some common signs of faulty spark plugs:

• Hard to start your vehicle
• Engine misfiring
• Rough idle
• Poor fuel economy
• Slow acceleration

During routine maintenance, a certified NAPA AUTOPRO technician can inspect your spark plugs to determine if they need to be cleaned or replaced according to your vehicle’s manufacturer recommendations. Vehicles must be equipped with the type of spark plugs indicated by the manufacturer.

NGK, Bosch, Denso, Autolite or Champion, your certified NAPA AUTOPRO technician can recommend the correct spark plugs for your vehicle whenever they need to be replaced.