How to Deal with Whitened Spark Plugs?
3 Answers
The method for whitened spark plugs is to promptly clean the engine carbon deposits and replace the spark plugs after cleaning. Steps for replacing spark plugs: Open the engine hood, lift the plastic cover of the engine, remove the high-voltage ignition 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 for external debris such as 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 removed high-voltage ignition wires in the firing order and secure the cover. Spark plug replacement interval: Under normal maintenance conditions, replacement is recommended after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is advisable to follow the user manual. The following standards can be referenced for maintenance 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.
When the spark plug appears white, I think the most common causes are engine overheating or the use of low-quality fuel leading to deposits. The solution is to first remove it and clean the white deposits, gently brushing the electrode part with a specialized brush. If it still doesn't shine after cleaning, replace it with a new spark plug, choosing the appropriate model to avoid overheating again. Check if the engine cooling system is functioning properly, such as whether the radiator and fan are clogged, to ensure complete combustion. Adjusting the ignition timing can prevent recurrence, ensuring the ignition system is not delayed. At the same time, insist on using high-quality gasoline or adding cleaning agents, and avoid driving for too long under extreme conditions. Although this process is simple, it must be done when the engine is cool, and gloves should be worn to ensure safety. After each treatment, I always test drive to observe the spark condition to prevent overlooking potential issues.
The issue of spark plugs turning white has happened to me several times, mainly caused by prolonged use of low-quality fuel or engine overheating. The first step in addressing this is to check if the spark plugs need replacement—if the white buildup is severe, it's more convenient to just replace them with new ones. For prevention, choose spark plugs with the correct heat range to avoid excessively high combustion temperatures. Also, inspect the engine's intake system to ensure the air filter is clean and doesn't affect the air-fuel mixture ratio. During daily driving, remember to minimize high-speed idling to protect engine health. I usually clean the spark plugs during routine maintenance, adding a drop of cleaner to help dissolve deposits. These simple tricks can extend their lifespan and save on future repair costs.
