火花塞的检查与保养,常被一些汽车驾驶员忽视。其实,检查火花塞的状况,在某种程度上可以判断发动机的工作是否正常。工作正常的火花塞,卸下后观察,其绝缘体顶端及两电极表面呈褐色且比较洁净。若出观下列症状,表明发动机或火花塞工作不良。 1.火花塞绝缘体顶端起疤、破裂或电极熔化、烧蚀等都表明火花塞已经损坏,应更换。在更换前检查一下烧损的症象以及颜色的变化情况是十分必要的,其目的是避免重复出现故障,对排除发动机隐患也有帮助。比如:电极熔化且绝缘体呈白色,说明燃烧室内温度过高,可能的原因是燃 Spark plug inspection and maintenance, often overlooked by some car drivers. In fact, check the status of the spark plug, to some extent, can determine whether the work of the engine is normal. Working normal spark plug, after removal observation, the top of the insulator and the two electrode surface brown and clean. If you observe the following symptoms, indicating that the engine or spark plug poor work. 1. The spark plug insulator scar from the top, rupture or electrode melting, ablation and so shows that the spark plug has been damaged, should be replaced. Before replacement, it is necessary to check the symptom of burning loss and the change of color. The purpose is to avoid repeated failures and help eliminate the hidden trouble of the engine. For example: electrode melting and white insulator, indicating the combustion chamber temperature is too high, probably because of burning