How Many Kilometers Should Platinum Spark Plugs Be Replaced?

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Platinum spark plugs should be replaced at 40,000 kilometers, while ordinary nickel alloy spark plugs need replacement at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Damaged spark plugs may exhibit the following symptoms: difficulty starting the engine, reduced power, excessive exhaust emissions, and increased fuel consumption. If these symptoms occur, the spark plugs should be replaced promptly. Steps for replacing spark plugs: Open the engine hood, lift the plastic engine cover, and remove the high-voltage ignition wires. Mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for external debris such as leaves or dust and ensure everything is 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 high-voltage ignition wires in the firing order, and then secure the cover plate.