其主要原因是发动机的磨损和燃烧室的积炭造成的。
The main cause is the engine wear and the combustion chamber caused by carbon.
因混合气过浓、点火系统有故障、发动机内压力损失、冷机等导致的不正常燃烧都会形成气门积炭。
Improper combustion, due to a rich mixture, defective ignition system, loss of compression in the engine, a cold engine, and so forth, will result in carbon deposits on the exhaust valves.
发动机长时间低速运行，可能导致火花塞积炭严重。
If the engine is running in an idle speed too long, spark plug might be serious carbonized.
应用推荐