How Often Should You Replace Spark Plugs?

For your engine to start and continuously run, it needs three things: air, fuel, and a spark. Without spark plugs, the part that sparks the fuel and air mixtures, your engine simply would not run. Your car may stop working until you get them fixed.


Consequently, you should maintain and change your spark plugs on time. While there isn’t a specific timetable, your vehicle’s handbook may list an approximated mileage range for replacing spark plugs. 


To back track, a spark plug is a component that is connected to the engine's cylinder and generates a spark for combustion. The spark’s energy is provided by the battery. They are made of metals like copper, nickel, iridium, and platinum and insulated by ceramic. Without spark plugs, your pistons will not fire.

What Are The Signs of Worn Spark Plugs?

  • Problems starting vehicle.
  • Rough idling.
  • Engine pinging or knocking.
  • Poor gas mileage.
  • Spark plugs have larger gaps.

How Often Should You Replace Spark Plugs?

Spark plugs are typically replaceable every 30,000 miles, give or take. Some vehicles can have up to 8 spark plugs, and it is best to change them all at once even if some of them are working better than others. If you don’t replace your spark plugs, you may experience a decrease in fuel economy, engine misfires, and overall poor engine performance. 


If you need assistance on changing spark plugs, feel free to call or bring your vehicle to the experts at Fox Run Auto today!

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