普通汽油载货车常出现缺缸(即少数缸不工作)故障,其表现是发动机在低、中、高速时,消声器均发出有节奏的“突突”声,并稍冒黑烟。产生这种故障的原因有下列几个方面:少数火花塞工作不良或不工作;少数高压分线脱落或插错(相邻两缸易插错);高压分线漏电或损坏;分电器盖旁插孔漏电或窜电;断电器凸轮角磨损不均。 检查判断少数缸不工作故障时,在稍高于怠速的转速下,可明显听到消声器发出有节奏“突突”声。因为怠速时,有的载货车消声器有异响干扰,容易误判;而在中、高速时,发动机的 Ordinary gasoline trucks often lack of cylinder (that is, a few cylinders do not work) failure, the performance is the engine at low, medium and high speed, the muffler are issued a rhythmic “bump” sound, and slightly black smoke. There are several reasons for this failure: a small number of spark plugs work poor or not working; a few high-voltage sub-line off or inserted wrong (easy to insert the next two wrong cylinder); high pressure line leakage or damage; Hole leakage or channeling; uneven wear cam angle. Check to determine a small number of cylinder does not work failure, slightly higher than the idle speed, you can clearly hear the muffler issued a rhythmic “bursts” sound. Because idling, some truck mufflers have abnormal sound interference, easy to misjudgment; and in the high-speed, the engine