Replacing the spark plugs on your 2018 Acura RDX is an essential maintenance task that helps ensure your vehicle runs smoothly and efficiently. Over time, spark plugs can become worn or fouled, leading to decreased engine performance, reduced fuel economy, and difficulty starting your car.

Signs You May Need New Spark Plugs

  • Engine misfires or rough idling
  • Decreased fuel efficiency
  • Difficulty starting the engine
  • Loss of acceleration or power
  • Check Engine Light illumination

Acura recommends inspecting and replacing spark plugs approximately every 105,000 miles for the 2018 RDX model, but it’s a good idea to check them sooner if you notice any of the symptoms above.

What to Expect During Replacement

The replacement process involves removing the engine cover to access the spark plugs, disconnecting the ignition coils, and then carefully extracting the old plugs. The new spark plugs are installed with proper torque to avoid damage and ensure optimal performance.

This job typically takes about one to two hours and can be done by a skilled DIYer or a professional mechanic. Using high-quality replacement spark plugs designed specifically for your RDX will help maintain engine health and longevity.

Tips for Maintenance

  • Use only OEM or Acura-approved spark plugs for best results.
  • Inspect ignition coils and wires for wear during replacement.
  • Keep a maintenance log to track when spark plugs were last replaced.
  • Consider professional service if you’re unfamiliar with engine components.