What is the function of a motorcycle spark plug?

1 Answers
DelChase
07/29/25 3:36pm
Function of a motorcycle spark plug: The ground electrode of the spark plug is connected to the metal shell, which is threaded into the engine block via the cylinder head. The insulator primarily serves to isolate the metal shell from the central electrode. The terminal nut is the part of the spark plug that contacts the high-voltage coil. When current passes through the terminal nut and the central electrode, it breaks down the medium between the central electrode and the ground electrode, generating a spark to ignite the air-fuel mixture in the cylinder. Components of a spark plug: A spark plug mainly consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. Types of spark plugs: Main types of spark plugs include: standard spark plugs, projected insulator spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-gap spark plugs.
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