(1)自制工具:月一根断钢锯片,用砂轮机磨成尖形,能放进火花塞壳体和中央电极绝缘体之间为易,同时要能插到底部。 (2)把工作不良或不工作的火花塞从发动机上拆下。观察火花塞绝缘体有无破裂,有破裂的应更换;再检查火花塞电极之间(?)况,如果电极之间的颜色为黑色而且有堆积物,这就是积炭:火花塞电极绝缘体和壳之间又有湿的油污,先擦净油污(?)用自制的工具,刮去火花电极绝缘体和壳之间的积炭,把刮 (1) self-made tools: a month on a broken hacksaw blade, grinded with a grinder into a pointed shape, can be placed between the spark plug shell and the central electrode insulator for ease, at the same time to be able to plug in the bottom. (2) Remove the spark plug that is not working or not working from the engine. Observe the spark plug insulator rupture, rupture should be replaced; and then check the spark plug electrode (?) Condition, if the color between the electrodes is black and there are deposits, which is coke: between the spark plug electrode insulator and the shell Wet oil, first clean the oil (?) With homemade tools, scrape the spark electrode insulator and the coke between the shell, the scraping