Why is it necessary to replace spark plugs regularly?

[DelTalia]

Regular replacement of spark plugs is necessary because carbon deposits will accumulate after prolonged use. If not replaced periodically, this can make engine starting difficult, leading to incomplete combustion. Additionally, the voltage that the ignition coil can provide is limited. Even with normally functioning spark plugs, as the electrodes wear down, the voltage required to bridge the spark plug gap continuously increases. This may cause misfiring during rapid acceleration, high-speed driving, or heavy loads, resulting in vehicle vibration, acceleration difficulties, and fuel wastage. Therefore, regular replacement of spark plugs is essential to maintain optimal engine performance and improve fuel efficiency.