Get Directions

565 West Jackson Street, Morton, IL, 61550

How Often to Change Your Spark Plugs

row of spark plugs

At Mike Murphy Ford’s service center, we’re often asked about spark plugs and how often they need to be changed. Generally, experts suggest replacing your spark plugs every 30,000 miles, although it can vary depending on your car. You’ll want to check your owner’s manual to get the suggested interval for your car. Below, you can find out how often to replace spark plugs, then schedule service when your car’s due for service.

Signs You Need New Spark Plugs

Though spark plugs should be changed roughly every 30,000 miles, there are warning signs you should watch out for. Spark plugs connect the ignition coil and combustion chamber. The moment you start your car, the spark plugs transfer the high-voltage current from the ignition coil to the engine’s combustion chamber. That being said, if the spark plugs aren’t working correctly, you’ll notice the following issues:

  • Slow start or not starting at all
  • Engine misfires
  • Engine is running but sounds rough
  • Idling that sounds rough
  • Acceleration is poor and sluggish
  • Fuel consumption is higher than usual

What Are the Benefits of Changing Your Spark Plugs?

When you change your spark plugs routinely, you’ll avoid the issues listed above, as well as enjoy the following benefits:

  • Improved Fuel Economy — Worn-out spark plugs can reduce fuel efficiency by as much as 30%.
  • Consistent Combustion System — When spark plugs are in working order, the combustion system will operate as intended.
  • Your Vehicle Starts Smoothly — Your vehicle will start seamlessly with properly functioning spark plugs.
  • Less Harmful Emissions — Not only can replacing your spark plugs increase fuel economy, but it can also reduce emissions.

Get Spark Plug Replacement at Mike Murphy Ford

Are you experiencing any of the issues listed above? If you suspect the problem is the result of worn spark plugs, the service team at Mike Murphy Ford can help. Browse our service specials for great offers on Ford service and genuine OEM parts. Then, contact us online or by phone (309) 263-2311 to learn more about our services!

Explore Our Models

  • 2022 Ford Escape Interior

    The all-new Ford Escape has a lot to recommend it, boasting powerful capabilities in a compact frame. Hit the roads of Peoria in style and safety with features like all-wheel drive, selectable drive modes, and a strong towing capacity. One of the highlights of the new Ford Escape is its sleek interior cabin, representing the…

  • 2022 Ford Explorer Interior

    The Ford Explorer full-size SUV is back for 2022, and among its most impressive features is a roomy interior cabin with several different seating arrangements available. If you need to max out the passenger capacity, you can comfortably seat up to seven passengers across three rows, with every passenger getting plenty of head- and legroom….

  • 2022 Ford F-150 Lightning Specs

    As the flagship of the Ford lineup, the Ford F-150 is one of America’s most iconic and recognizable pickup trucks. Now, it’s getting a revolutionary upgrade in the form of the Ford F-150 Lightning, a fully-electric pickup that retains everything you love about the F-150 while adding a whole new range of benefits. These include…



Your garage is empty.
Save some vehicles to get started!


Your garage is empty.
Save some vehicles to get started!
Ford Recalls
Mike Murphy Ford 40.615312, -089.462684.