What is the solution for blackened spark plugs?
2 Answers
The solution for blackened spark plugs is to clean the carbon deposits and replace them with new spark plugs. 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. While removing them, check for any external debris such as 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 removed high-voltage distributor wires according to the firing order, and secure 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 user manual. The following standards can be used as a reference 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.
As a frequent driver, I've personally encountered the issue of blackened spark plugs, mainly caused by excessive engine carbon buildup or incorrect air-fuel mixture ratio. The solution is to first remove the spark plugs for inspection. If they're only slightly blackened, you can gently clean the electrode part with a wire brush before reinstalling them for testing. If there's severe erosion or cracks, replace them with new spark plugs immediately—don't try to save money by using low-quality ones. Pay attention to driving habits in daily use, such as avoiding frequent short trips or prolonged idling, which prevent the engine from reaching optimal temperature and lead to carbon buildup. Also, it's advisable to regularly check the air filter and replace it promptly when dirty to avoid blocking the air intake and affecting combustion efficiency. When experiencing engine shaking or starting difficulties, don't delay—visit a professional repair shop for a complete diagnosis to prevent minor issues from turning into major problems.
