如果在气门罩盖密封处没有渗油的情况,基本上可以排除气门油封的问题。反之,如果有,可以打开气门罩盖检查油封的情况,先更换气门油封试验,然后再确诊活塞环的故障,这样可以在维修上节油修理费,因为气门罩盖很容易打开,更换气门油封成本相比更换活塞环更低。
热车之后,无论是急加速还是怠速过程,只要转速急速攀升,排气管如有蓝色烟雾排出,这类属于急加速烧机油。(急加速烧机油主要是气缸内壁与活塞环间的密封效果不良,导致机油直接从曲轴箱进入燃烧室)希望我的回答能帮助到你
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