How Often Should Iridium Spark Plugs Be Replaced?

[NolanDella]

Iridium spark plugs should be replaced every 60,000 to 80,000 kilometers. Under normal maintenance conditions, spark plugs are typically replaced after traveling 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it's recommended to follow the guidelines in the user manual. Generally, platinum spark plugs are replaced at 40,000 kilometers, while standard nickel alloy spark plugs are replaced at 20,000 kilometers. Steps for replacing spark plugs: Open the hood and remove the plastic engine cover. Disconnect the high-voltage ignition wires, marking 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 clean thoroughly. Insert the new spark plug into the spark plug hole, hand-tighten it a few turns, then use the socket to fully tighten it. Reinstall the high-voltage ignition wires in the correct firing order and reattach the cover.