What phenomena will occur after a Motorcycle Spark Plug is worn?

Motorcycle Spark Plug have a service life, and wear is a common situation. Generally, Motorcycle Spark Plug will be disposed of after wear, but what is the state of a worn Motorcycle Spark Plug?

(1) Wear pockmarks
After Motorcycle Spark Plug are worn, they will produce pits in the worn areas, which will have a metallic luster texture under the light. At the same time, the Engine Accessories of Motorcycle Spark Plug will first increase and then decrease. This is because the Motorcycle Spark Plug is not a completely flat surface. During use, as the Engine Accessories wear out, the product will become flatter and the contact area will also decrease. With the increase, the Engine Accessories produced by Motorcycle Spark Plug are also increasing. Then, as the wear becomes more and more serious, the Engine Accessories then show a downward trend.
(2) Wear and form flakes
After long-term use and wear of Motorcycle Spark Plug, there are many scale-like shapes on the working surface along the direction and distribution of friction movement. Some are directly adhered to the surface of the Engine Accessories, and some are in a warped shape. The scales have white metal. Glossy, there is a black or blue oxidized area on the outer surface of the Motorcycle Spark Plug.
(3) Grooves appear on the surface
After Motorcycle Spark Plug are worn, ravines will appear on the surface of the Engine Accessories, irregular cracks will appear on the smooth bottom, and burrs of varying sizes will appear on the rough bottom.