Check the airpressureregulator, if there is any loosen.
检查空气油量（气量）调节阀等相关部件有无异常，是否松动。
2
On the vehicles for routine maintenance, air cleaner and pressureregulator PCV overlooked.
在对车辆进行常规维护时，空气滤清器和压力调节阀pcv容易被忽视。
3
In order to avoid premature wear engine (abnormal) and maintain the best working condition, the air filter and pressureregulator PCV regular inspection and replacement is crucial.