Should Silicone Grease Be Applied When Changing Spark Plugs?

[EmiliaLynn]

When changing spark plugs, silicone grease should be applied. It is important to note that the grease should only be applied to the white ceramic part and not to the metal contact area. Steps for changing spark plugs: Open the engine hood, remove the plastic cover of the engine, and disconnect the high-voltage wires. 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 thoroughly cleaned. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the high-voltage wires in the correct firing order and reattach the cover. Spark plug replacement interval: Under normal maintenance conditions, spark plugs should be replaced every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the vehicle's manual. Here are some general guidelines for maintenance replacement: 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 to 80,000 kilometers.