What are the effects of not changing spark plugs for a long time?

[SamanthaAnn]

Not changing spark plugs for a long time will affect the engine's power and fuel economy. Spark plugs are the terminal components of the engine ignition system and are also wear-prone parts. If the spark plugs are oily or shortened, it will affect normal operation, leading to weak car starting, incomplete combustion of cylinder fuel, increased fuel consumption, and poor acceleration. After prolonged use, the electrodes of spark plugs will experience increased gaps and carbon buildup, which will affect the ignition energy and ignition power of the spark plugs. The electrodes of the spark plugs repeatedly and continuously generate electricity to ignite the mixed gas in the cylinder. Other parts of the ignition system generate timed high-voltage electrical pulses, forming sparks and producing explosions to provide the energy required for engine power output.