How to Clean Carbon Deposits on Spark Plugs?

[HoldenLee]

Methods to clean carbon deposits on spark plugs: 1. Remove the spark plugs from the engine; 2. Take a square beverage bottle and cut four holes slightly larger than the spark plug threads on it; 3. Lay the bottle flat, pour white vinegar into it, then place the spark plugs into the holes, ensuring the white vinegar just covers the spark plug electrodes; 4. Depending on the severity of the carbon deposits, determine the soaking time, generally 3 to 5 hours, for particularly severe cases, it can be extended but should not exceed 12 hours; 5. Remove the spark plugs and scrub them with a soft-bristled brush like a toothbrush to clean off the carbon deposits.