Excessive Engine Oil Consumption - Inspect
检查曲轴两端的油封是否漏油。 查看发动机油底壳密封垫和所有润滑系统接头有无渗漏。 这可能是由于燃烧气体从活塞周围的漏出导致的。 闭式曲轴箱通风系统的滤清器堵塞将导致曲轴箱压力过高。 这可能会导致密封件和密封垫泄漏。 有关更多信息，请参阅操作和保养手册, "闭式曲轴箱通风（CCV）烟气排放滤清器 - 更换"。
发动机机油漏进气缸的燃烧区域会造成排气冒蓝烟。 机油可能通过四种途径漏入气缸的燃烧区域：
- 通过磨损的气门导管和气门杆之间漏入
- 磨损或损坏的部件(活塞、活塞环或油环槽内肮脏的发动机机油回油孔)
- 压缩环和/或中间环安装不正确
- 通过涡轮增压器轴的密封环漏入
- 曲轴箱机油加注过满
- 错误的油尺或油尺导引管
- 发动机长时间轻负荷运转
如果使用的发动机机油粘度不正确，也会造成发动机机油消耗量过多。 燃油漏进曲轴箱或发动机温度升高都会使发动机机油粘度变稀。
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