What is the replacement interval for spark plugs in household vehicles?

[VonElliot]

Household vehicle spark plug replacement intervals: 1. The lifespan of standard spark plugs is 20,000 kilometers. They can typically continue to be used beyond this mileage, but it is recommended not to exceed 40,000 kilometers, otherwise the ignition efficiency will decrease, leading to reduced engine power; 2. Single platinum spark plugs have a lifespan of 50,000 to 80,000 kilometers and require regular replacement; 3. Iridium spark plugs last for 50,000 kilometers. When performance declines, it manifests as cathode erosion, causing changes in ignition gap and reduced stability, so regular replacement is advised. Spark plugs utilize high-voltage discharge to break down the air between electrodes, generating an electric spark to ignite the combustible gas mixture in the combustion chamber, thereby maintaining engine operation. The main types of spark plugs include: standard spark plugs, insulator projection spark plugs, electrode spark plugs, seat-type spark plugs, and pole-type spark plugs.