发动机怠速不稳

丰田锐志2.5发动机怠速不稳故障分析与排除

Troubleshooting of Unstable Idling on TOYOTA REIZ 2.5

桑塔纳汽车发动机怠速不稳的检修实例。

Finally introduced the Sangtana motor car engine idling regime not steady overhaul example .

然后分析了汽车发动机怠速不稳的几种常见故障诊断与排除方法；

Then has analyzed the motor car engine idling regime not steady several kind of common failure diagnosis and the elimination method ;

就外界温度而言，燃油的挥发性过高，或蒸汽管路中的节流器有故障，也会使发动机的怠速不稳。

A fuel too volatile for the outside temperature , or a missing restrictor in the vapor line , will also cause improper engine idling .

PCV阀在过渡状况被粘住时，发动机会出现怠速不稳和频繁息火的故障。

When the PCY valve sticks in the intermediate position , the engine idles rough and stalls frequently .

该发动机常见的故障症状为发动机起动困难、怠速不稳、喘振、断火或缺火、回火、爆震、功率不足及燃油经济性不良等。

Troubles to be seen usually in BUICK car engine are : difficult start to engine , unstable idle speed , surging engine , off-ignition or lack of ignition , back fire , detonation , unefficiency of power and inferior fuel economy , etc.