Other possible reasons include problems with the oil pump, rod and main bearing clearances, camshaft end play, or CAM bearings and lifters.
其他可能的原因包括油泵问题,杆和柱轴承之间的空隙,凸轮轴停止工作或者凸轮的方位和升降等。
2
The abutment or end location (23) is sized to provide that the source is supported in its correct position for opening of its valve on operation of the CAM mechanism (8).