How Many Kilometers Should the Original Spark Plugs Be Replaced?
2 Answers
Under normal maintenance conditions, car spark plugs should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the user manual. You can refer to the following standards for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the engine's plastic cover, remove the high-voltage ignition wires, and mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for any external debris like leaves or dust and ensure they are cleaned thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage ignition wires in the firing order, then secure the cover.
The recommended mileage for replacing original spark plugs is usually found in the vehicle's manual, mostly between 20,000 to 40,000 kilometers. For example, copper spark plugs, due to their simpler material, typically need replacement at 20,000 to 30,000 kilometers. Higher-end materials like platinum or iridium can last 40,000 to 60,000 kilometers or even longer. However, don't just rely on the numbers; consider your driving habits as well. Frequent driving in congested urban areas can wear out spark plugs faster, possibly requiring inspection before 20,000 kilometers. Delaying replacement can cause ignition issues, leading to engine shaking, sluggish acceleration, or even a spike in fuel consumption. I personally replaced mine at 30,000 kilometers and noticed a much smoother performance. Remember to have the technician check the spark plug gap during regular maintenance to ensure the engine runs healthily.
