How Often Should the Spark Plugs of Highlander 2.0T Be Replaced?

[LaCorey]

The spark plugs of Highlander 2.0T should be replaced around 60,000 kilometers. Under normal maintenance conditions, spark plugs should be replaced after driving 40,000 to 60,000 kilometers, but it may vary depending on the brand and engine. It is recommended to follow the user manual. The following standards can be referred to for maintenance and replacement: platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Steps for replacing spark plugs: Open the hood, lift the plastic cover of the engine, remove the high-voltage distributor wires, and mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. When removing them, check if there are any leaves, dust, etc., on the outside and make sure to clean them 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. Install the removed high-voltage distributor wires according to the firing order, and then snap the cover back on.