Replacing the spark plugs in your Mitsubishi Mirage is a straightforward maintenance task that can improve your vehicle’s performance and fuel efficiency. Regularly changing your spark plugs ensures a smooth start and optimal engine operation.

What You’ll Need

  • New spark plugs (check your owner's manual for the correct type)
  • Spark plug socket and ratchet
  • Spark plug gap tool
  • Dielectric grease
  • Torque wrench
  • Extension bar (optional for easier reach)
  • Anti-seize compound (optional)

Step-by-Step Replacement Guide

Follow these steps to replace your Mitsubishi Mirage spark plugs safely and effectively:

  1. Allow the engine to cool: Make sure your car is off and the engine is completely cool to avoid burns.
  2. Locate the spark plugs: Open the hood and find the ignition coils on top of the engine, which cover the spark plugs.
  3. Remove ignition coils: Unplug the electrical connectors and remove the bolts holding the ignition coils in place. Carefully pull out the coils.
  4. Remove old spark plugs: Use the spark plug socket and ratchet to unscrew and remove the old plugs.
  5. Check and gap new plugs: Verify the gap on the new spark plugs with a gap tool, adjusting if necessary to match your vehicle’s specifications.
  6. Install new spark plugs: Apply a small amount of anti-seize compound on the threads (optional) and carefully screw in the new plugs by hand to avoid cross-threading. Then tighten with a torque wrench to the recommended torque.
  7. Reinstall ignition coils: Apply dielectric grease to the inside of the boots, place the coils back over the plugs, secure the bolts, and reconnect the electrical connectors.
  8. Test your work: Start the engine to ensure it runs smoothly without misfires or rough idling.

By following these steps, you can maintain your Mitsubishi Mirage’s engine health and enjoy reliable performance for miles to come.