In a two-stroke gasoline engine, exhaust gas pollution is especially severe when it burns rich mixture of blended fuel.
二冲程汽油机排气污染严重，尤其是燃烧混合油、浓混合气时有害物排放量大。
For this reason, it is necessary to provide extremely rich mixture from the carburetor in order to provide sufficient combustible mixture to all cylinders for quick starting.
由于这个原因，要使发动机迅速启动，必须通过化油器向每个汽缸提供浓的可燃混合气。
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.
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。
High pressure will cause an over rich mixture, excessive fuel consumption, and such troubles as fouled spark plugs, rings, and valves (from excessive carbon deposits).
气过浓，燃油消耗过量，以及造成火花塞、活塞环、气门的堵塞(因积碳过量)。
High pressure will cause an over rich mixture, excessive fuel consumption, and such troubles as fouled spark plugs, rings, and valves (from excessive carbon deposits).
气过浓，燃油消耗过量，以及造成火花塞、活塞环、气门的堵塞(因积碳过量)。
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