What is the difference between a four-pole spark plug and a single-pole spark plug?

[OMia]

The specific differences between a four-pole spark plug and a single-pole spark plug: 1. Reliability: Four-pole spark plugs are more reliable than single-pole spark plugs. If one pole is damaged, the other poles can continue to function. 2. Advantages: The advantage of a single-pole spark plug is that it offers less obstruction during gas combustion transmission, resulting in faster combustion speed and stable spark jumping. On the other hand, the advantage of four-pole and multi-pole spark plugs lies in the number of negative poles. If one negative pole erodes, the spark can jump to another negative pole, extending the service life and maintaining the ignition gap for a longer time. When one gap becomes too large due to wear, another gap can be used. Spark plug replacement cycle 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, so it is recommended to follow the user manual. The following standards can be used as a reference for maintenance replacement: Platinum spark plugs should be replaced every 40,000 kilometers, ordinary nickel alloy spark plugs every 20,000 kilometers, and iridium spark plugs every 60,000 to 80,000 kilometers.