How often should Golf spark plugs be replaced?
2 Answers
Golf spark plugs should be replaced every 30,000 to 50,000 kilometers. The replacement interval varies depending on the material of the spark plugs. Under normal maintenance conditions, they should be replaced after driving 40,000 to 60,000 kilometers. However, this may differ based on the brand and engine type, so it is recommended to follow the user manual. You can refer to the following standards for maintenance and 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. Steps for replacing spark plugs: Open the hood, lift the plastic cover of the engine, and remove 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 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 wires according to the firing order and secure the cover plate.
I've driven several generations of the Golf. According to the maintenance manual, the spark plugs need to be replaced approximately every 30,000 kilometers or every 3 years. If you don't replace them, excessive carbon buildup on the spark plugs can cause engine shaking and a significant increase in fuel consumption, especially if you do a lot of short-distance driving. My friend's car went 50,000 kilometers before replacing them, and the fuel consumption increased by 15%, with noticeably weaker acceleration. It's best to have the mechanic check the electrode wear during each maintenance. If you notice blackening or changes in the gap, replace them immediately. New spark plugs aren't expensive—just a couple hundred yuan—and you can do it yourself, but be careful not to damage the ignition coils. Overall, following the manual is more convenient and safer.
