How Often Should Original Spark Plugs Be Replaced?

[VanLeila]

How often original spark plugs should be replaced depends on the material of the spark plugs. The replacement interval for ordinary nickel alloy spark plugs is approximately 20,000 kilometers; for platinum spark plugs, it is 35,000 to 45,000 kilometers; and for iridium spark plugs, it is 65,000 to 75,000 kilometers. Common spark plug faults can be summarized into two types: 1. Severe spark plug erosion; 2. Spark plug deposits. Spark plugs, commonly known as "fire mouths," function by discharging the high-voltage pulses sent through the high-voltage wires (spark plug wires), breaking down the air between the two electrodes to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder. The main types of spark plugs include: standard spark plugs, insulator projection spark plugs, electrode-type spark plugs, seat-type spark plugs, pole-type spark plugs, and surface-gap spark plugs.