How Often To Change Spark Plugs

Spark Plug Change

Spark plugs should be changed about every 30,000 miles, but you can find a more exact recommendation in your vehicle’s owner’s manual. How often to change spark plugs can also vary based on your driving habits and road conditions in La Jolla. Read below for more info on changing spark plugs, and how to tell when the spark plugs in your car are no longer working their best. Have more service questions? Read our service tips for more DIY car repairs and contact our service department with special questions!

When Do I Change Spark Plugs?

Spark plugs are a key component of your car’s ignition system: the ignition coil generates a voltage charge, and the spark plugs carry the charge to the combustion chamber. When you turn the ignition, the combustion chamber ignites — starting your engine. Your car can’t start correctly if the spark plugs aren’t in good working order. If you notice any of the following signs, it’s time to schedule service to replace your spark plugs:

  • Misfiring engine
  • Rough-sounding engine
  • Rough noises during engine idling
  • Poor acceleration
  • Decreased fuel economy
  • Engine startup failure or slow engine start

Why Replace Your Spark Plugs?

Replacing your spark plugs helps keep the rest of your ignition system healthy. You’ll also see the following benefits when it comes to performance on the road in Carlsbad:

  • Fuel Economy – Worn spark plugs can impede fuel economy by up to 30%. Replacing the plug can help restore your car’s fuel efficiency.
  • Reliability – Your car runs more reliably when properly-functioning spark plugs can keep combustion going.
  • Starting the Engine – Good spark plugs will fire up the engine right away. After you replace your car’s spark plugs, you should notice an immediate difference!
  • Reduced Harmful Emissions – In addition to providing an mpg boost, fresh spark plugs can help control harmful emissions.

Rely on Mossy Toyota for Spark Plug Service!

Is your car not as easy to start as it used to be? Worn out spark plugs may be to blame. Schedule service at our service center so our expert technicians can diagnose the issue. Get in touch to learn more about important routine maintenance like oil changes, jump-starts, and other car care topics.

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Mossy Toyota

4555 Mission Bay Drive San Diego, CA

Phone: (858) 295-3002


Phone: (858) 581-4000

4555 Mission Bay Drive San Diego, CA


Phone: (858) 295-3002

4555 Mission Bay Drive San Diego, CA


Phone: (858) 581-4501

4555 Mission Bay Drive San Diego, CA
32.8042521 -117.2169939
Mossy Toyota 32.8042521, -117.2169939.