气门掉入气缸中，肯定是柴油机突然工作不稳定，发出较大的撞击声，并自行停车，熄火。经查缸盖、气缸套，活塞顶发生不同程度损坏。这一故障主要是气门锁夹没有锁牢固以致振动后脱出。主要原因有以下四方面：一、气门锁夹质量低劣，没有卡住气门杆。二、两锁夹上端面不一... Valves fall into the cylinder, it is certainly a sudden work of diesel instability, a larger percussion sound, and parking on their own, turn off the fire. Check the cylinder head, cylinder liner, piston top damage occurs to varying degrees. The main problem is that the valve lock does not lock the lock clamp so that the vibration after prolapse. The main reason has the following four aspects: First, the poor quality of the valve lock clamp, stuck valve stem. Second, the two locks on the face of different ...