Automotive Repair Blog: Tips, Facts, and Fixes

Is My Check Engine Light On Because of My Spark Plugs?

Spark plugs are small but mighty pieces in your vehicle. These small metal-ended parts enable the spark that starts up the fuel-burning process. Without spark plugs, say goodbye to starting and going anywhere with your vehicle. Spark plugs also have a role in moving your pistons, which is required to have a balanced fuel and air mixture.

If your car, truck, or SUV won't start, you may inherently assume it is a battery problem. But, the problem could very well be due to old spark plugs. In fact, aging spark plugs may very well cause your check engine light to come on.


However, it's not safe to assume that every check engine light is due to ineffective spark plugs either. This yellow dashboard warning light can come on for countless reasons: 

  • Engine misfires
  • Rough idling
  • Acceleration troubles
  • Immense exhaust emissions
  • Poor fuel efficiency
  • Loose fuel cap
  • Overall weak engine performance

Whether you have car starting problems or a lit check engine light (or BOTH), we highly recommend taking a trip to Pro Auto Care for a proper diagnosis.


Spark Plug Replacement in Denver, CO & Littleton, CO

If you suspect you need a spark plug replacement, please bring your vehicle to Pro Auto Care for a thorough inspection. Our professional techs can figure out whether your car requires renewed spark plugs or a different kind of repair. Spark plugs are an essential part of preventative maintenance that our technicians can easily inspect, replace, and repair. Let us take care of your spark plugs today by giving us a call or visit.