Defective vacuum advance

博客 ... （火花塞）积碳Carbon fouling 真空提前失效Defective vacuum advance 高压线跳火错乱Secondary wire crossfiring ...

 carbon fouling

... boiler fouling 锅炉灰垢 carbon fouling 火花塞积碳; 真空提前失效 catalyst fouling 催化剂污损 ...