The lifespan of a motorcycle spark plug can vary depending on several factors, including the type of plug, the motorcycle's make and model, riding conditions, and maintenance practices. However, as a general guideline, it is recommended to replace spark plugs every 6,000 to 12,000 miles (9,600 to 19,200 kilometers) or as specified by the motorcycle manufacturer.
Modern spark plugs are typically designed to have a longer service life compared to older plugs. They are made with advanced materials and technology that allow for better performance and durability. Some high-quality spark plugs may last up to 25,000 to 30,000 miles (40,000 to 48,000 kilometers) or more before requiring replacement.
It's important to note that spark plugs should be inspected regularly, regardless of mileage, to ensure they are in good condition. Factors such as fouling, wear, or damage can affect the performance of the spark plug. Signs that a spark plug may need replacement include misfiring, difficulty starting the motorcycle, poor fuel efficiency, or visible signs of wear, such as eroded electrodes or a heavily coated insulator.
Always refer to the motorcycle's user manual or consult the manufacturer's recommendations for the specific spark plug replacement intervals and specifications for your particular motorcycle model. Following the manufacturer's guidelines will help ensure optimal performance and reliability of your motorcycle's ignition system.