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Everyone, start your engines! That is, if your spark plugs are healthy.

It might be surprising, but spark plugs play a huge role in a smooth ride. These little parts provide the spark that’s needed to start your engine. From the ignition system, your spark plugs transfer the electricity which produces a spark. The flame mixes with the air/fuel in your engine, making it run. If this spark is not big enough or not performing properly, a number of things can feel wrong within your engine:

Rattling: Does it feel like your whole car is rattling, vibrating, and shaking? When things just don’t sound or feel right when you start your car or while you’re driving/idling, your spark plugs are no longer in good shape. The spark is seemingly firing at the wrong time, leading to the whole ride being uncomfortable.

Low gas mileage: Is your fuel just not lasting as long as it used to? Old spark plugs could be the culprit. After a thorough inspection and spark plug replacement, your mileage should be as good as new!

Hard starts: Inconsistencies will take place once the spark plugs begin to wear out, such as your car not always starting, misfires, and abnormal performance. This can be frustrating for you, and hard on your engine.

Reduced performance: You may find yourself struggling as you drive because your vehicle refuses to perform the way it usually does. Replacing the spark plugs can help bring back your car’s performance capabilities and help maintain its fuel supply.

Replacement Spark Plugs

Spark plugs are recommended to be changed every 30,000 miles or so. But, like most auto parts, the way you drive and the quality of the part can all determine its lifespan. Copper spark plugs tend to last the shortest amount of time, whereas platinum will last longer.

Replacing your spark plugs is quite simple:

  1. With the engine cool, remove the spark plug wire off one spark plug (doing this one plug at a time will cause less confusion).
  2. Blow and clean any dust or dirt away from the area around the old plug.
  3. With a spark plug wrench, turn the old plug counter-clockwise to remove it.
  4. To install the new spark plug, insert it into the now empty cylinder and turn it clockwise with the wrench (do not over tighten).
  5. Reattach the wire onto the new spark plug, and repeat the same process for the second plug.


Have you ever felt the frustrations of driving with faulty spark plugs?

AutoShack.com has recently introduced a wide assortment of Autolite Spark Plugs, including Platinum Spark Plugs, Double Platinum Spark Plugs, Copper Spark Plugs, XP Xtreme Performance, and High Thread HT.

The AutoShack.com blog has a purpose to educate and inform, and is in no way responsible for any vehicle damage or misdiagnoses. Consult a licensed technician for further advice on vehicle related issues.

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