How Often to Change Spark Plugs

If you’ve ever had trouble starting your vehicle, your first instinct was probably to pop open the trunk and grab your jumper cables. But not all starting problems are caused by a faulty battery. In fact, worn-out or defective spark plugs are often the culprit. And while most drivers have some basic knowledge of car batteries, spark plugs are usually a little more mysterious. 

So, how long do spark plugs last? And how do you know how often to change spark plugs? Let’s cover some fast facts about this critical component in your vehicle.

What Do Spark Plugs Do?

Spark plugs may have the most important task of all: they help the engine start. Spark plugs are responsible for igniting the air/fuel mixture within the engine’s combustion chamber, which is what helps make your car move. So, even if you have a well-oiled engine and a full tank of gas, you can’t use either of them without good spark plugs.

When spark plugs start to wear out, it can lead to all kinds of problems. You might need to stop for gas more often because your car's fuel efficiency has dropped. Starting your vehicle might become a hassle, and you could experience misfires or a rough, shaky engine. Plus, worn spark plugs can lead to higher emissions, which isn't great for the environment or passing your next smog check!

Signs That Your Spark Plugs Need Changing

If your car isn’t running quite like it used to or the check engine light is illuminated, your spark plugs could be bad. Common signs include trouble starting your engine, a drop in fuel efficiency, or a rough idle that makes your car feel shaky. You might even experience misfires or sluggish acceleration. If any of this sounds familiar, it’s a good idea to check them and see if you need a spark plug replacement.

How to Extend the Life of Spark Plugs

Want to make your spark plugs last longer? A few simple steps can help keep them in top shape and your engine running smoothly.

Driving Habits

How you drive can impact how long your spark plugs last. Smooth and steady driving — like easing into your acceleration and avoiding hard stops — can reduce the strain on your engine and spark plugs. If you're constantly hitting the gas hard or stuck in stop-and-go traffic, your plugs will wear out faster. So, next time you’re on the road, try to take it easy on the pedal. It’ll pay off in the long run!

Regular Maintenance

Keeping up with regular maintenance is a sure way to extend the life of your spark plugs. Changing your engine air filter, getting tune-ups, and keeping your engine in good shape will prevent build-up on the plugs and help them perform better. Plus, keeping an eye on your engine’s overall health will ensure your spark plugs aren’t working overtime.

Replace Your Spark Plugs at Your Local Jiffy Lube

If the check engine light comes on or you notice the issues associated with faulty spark plugs, don't hesitate to have your car serviced. Ignoring these telltale signs can cause major damage to your engine, which could require costly repairs. Instead, bring your vehicle to Jiffy Lube^® today. Trained technicians know the inner workings of your engine and can perform an inspection to evaluate your spark plugs and other vital components. Plus, they’ll complete any replacements or repairs as outlined by your vehicle manufacturer, helping ensure that your car is working exactly how it was designed.

NOTE: Not all services are offered at all Jiffy Lube service centers. Please call ahead or check jiffylube.com to ensure the service is available at the Jiffy Lube location near you.