我厂一辆东风EQ140型汽车,在长途去天津市途中,当中速行驶时,发动机出现“突、突”声,有动力不足现象,在低速和高速运行时工作则正常。后经对化油器的加速、加浓装置进行清洁,又更换火花塞、高压点火 I plant a Dongfeng EQ140-type cars, on the way to Tianjin in the long distance, when medium-speed driving, the engine appeared “sudden, sudden” sound, there is lack of motivation in the low-speed and high-speed operation is normal. After the carburetor acceleration, enrichment device for cleaning, but also to replace the spark plug, high pressure ignition