Double Iridium Spark Plug for Toyota FK20HR11

Working principle of Car spark plugs  Under the action of high voltage, the air between the center electrode and the side electrode of the spark plug will rapidly ionize, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain value, the number of ions and electrons in the gas increases like an avalanche, so that the air loses its insulation, and the gap forms a discharge channel, resulting in a "breakdown" phenomenon. At this time, the gas forms a luminous body, that is, "spark". With its thermal expansion, there is also a "patting" sound. The temperature of this spark can be as high as 2000 ~ 3000℃, which is enough to ignite the mixture in the cylinder combustion chamber. What happens if you don't change the spark plug for a long time? 1.Lack of power, ignition capacity…