What should be used to clean car spark plugs?

[SanWalter]

Car spark plugs should be cleaned with blue toilet cleaner, as follows: Soak the spark plug ignition electrode directly in pure toilet cleaner, and you will see a large amount of bubbles produced, which is caused by the chemical reaction between carbon deposits and the toilet cleaner. Place it in a ventilated environment for 10 minutes, and when the bubbles gradually decrease, take it out. If there are still black carbon deposits, you can soak it for a while longer, then rinse it with white vinegar. Do not rinse with water, just let it air dry. Spark plugs are mainly composed of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. The working principle of a spark plug: The ground electrode of the spark plug is connected to the metal shell, which is threaded into the engine block through the cylinder head. The insulator mainly serves to isolate the metal shell and the center electrode. The terminal nut is the part of the spark plug that contacts the high-voltage coil. After the current passes through the terminal nut and the center electrode, it breaks down the medium between the center electrode and the ground electrode to produce a spark, thereby igniting the air-fuel mixture in the cylinder.