Does Not Changing Spark Plugs for 70,000 Kilometers Affect a Wuling Vehicle?
2 Answers
It will affect the engine's power performance and fuel economy. Spark plugs are wear-prone components. After prolonged use, the gap between the spark plug electrodes will widen, affecting the ignition energy of the spark plug. With extended usage, carbon deposits will form on the spark plug electrodes, which also impacts spark plug ignition. Spark plugs are crucial components in a gasoline engine's ignition system. They introduce high voltage into the combustion chamber and create a spark by jumping the electrode gap, thereby igniting the combustible air-fuel mixture in the cylinder. Under high voltage, the air between the spark plug's center electrode and side electrode rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain level, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties. A discharge channel forms in the gap, resulting in a "breakdown" phenomenon. At this point, the gas becomes a luminous body, known as a "spark." Along with thermal expansion, a "crackling" sound is also produced. The temperature of this electric spark can reach 2000-3000°C, sufficient to ignite the air-fuel mixture in the cylinder's combustion chamber.
Having driven for decades, I know spark plugs are crucial for engine ignition. Not replacing them for 70,000 km significantly impacts budget cars like Wuling: ignition efficiency drops sharply, electrode wear weakens sparks, causing pronounced shaking during startup, sluggish acceleration like hauling extra weight, and fuel consumption creeping up by about 10%. Prolonged neglect raises misfire risks, risks exceeding emission standards, and may even damage ignition coils—repairs then cost far more. I recommend promptly visiting a professional shop for new spark plugs while also checking high-voltage wires and the ignition system. This small replacement can restore your car's pep and fuel efficiency. Don't delay—keep your ride running smoothly.
