How Many Kilometers Should Platinum Spark Plugs Be Replaced?
2 Answers
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, 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 cover of the engine, 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 any external debris like leaves or dust and ensure they are thoroughly cleaned. 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 secure the cover.
As an enthusiast who often tinkers with cars, my experience with replacing platinum spark plugs tells me that they generally need to be replaced every 80,000 to 100,000 kilometers, but this depends on how the car is used. For example, if I drive mostly long-distance highway trips, the spark plugs wear less and can last up to 100,000 kilometers. However, if I frequently drive short distances in the city with constant stop-and-go traffic, the engine undergoes more thermal cycles, and the spark plug electrodes are prone to corrosion, possibly requiring replacement at around 70,000 kilometers. The advantage of platinum spark plugs lies in their high heat resistance and strong oxidation resistance, making them much more durable than standard copper electrodes. But don’t wait until the engine starts shaking or loses power before replacing them—by then, fuel consumption may spike by over 20%. Regularly checking the ignition system at a professional shop is a smart preventive measure, as a failed spark plug can cause the engine to stall.
