Does my motorcycle need new spark plugs?
For most modern motorcycles, spark plugs should be replaced every 15,000 to 16,000 miles. But, if your motorcycle is running rough, sputtering, or is losing power, spark plugs should be inspected and replaced if necessary.
When should I change my motorcycle spark plugs?
Motorcycle spark plugs should be replaced every five years.
What does a motorcycle misfire sound like?
So what does a misfire sound like? During a misfire, the engine will make a sudden sound that can be described as popping, sneezing, or backfiring. Backfiring occurs when unburned fuel exits the cylinder on the exhaust stroke and is then ignited farther in the system by the spark of the next cylinder.