How Often Should Iridium Spark Plugs Be Replaced?

[Luis]

Iridium spark plugs should be replaced every 60,000-80,000 kilometers. Under normal maintenance conditions, automotive spark plugs are typically replaced after 40,000 to 60,000 kilometers of driving. However, this may vary depending on the brand and engine type, so it's recommended to follow the guidelines in your vehicle's manual. Here are some general maintenance standards for reference: platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000-80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the engine's plastic cover, and remove the high-voltage distributor wires. Make sure to mark each wire according to its corresponding cylinder position to avoid confusion. Use a spark plug socket to remove each spark plug one by one. While removing them, check for any external debris like leaves or dust and clean thoroughly. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to fully tighten it. Reinstall the high-voltage distributor wires in the correct firing order, then secure the cover plate.