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故障现象一辆行驶里程约为9万km的2008年11月出厂的东风雪铁龙凯旋轿车(配备2.0 L EW10A发动机),因气缸垫漏水在一家修理厂更换过气缸垫后,出现怠速不稳(发动机转速在700 r/min~1 300 r/min忽高忽低)的故障现象,热车后不踩加速踏板发动机会自动熄火,但开着空调行驶会好一点,松开加速踏板后发动机没有那么容易熄火,故障无法排除,修理工向笔者请求技术支持。故障诊断接车后,笔者拆开节气门前段进气管
Symptom A Dongfeng Citroen triumph sedan (equipped with a 2.0 L EW10A engine), which had a mileage of about 90,000 km and was shipped in November 2008, experienced idling instability after the cylinder pad was leaked at a repair shop (engine Speed 700r / min ~ 1300 r / min ups and downs) of the phenomenon of failure, hot car does not step on the accelerator pedal will automatically turn off the engine, but driving on air-conditioned will be better, after releasing the accelerator pedal, the engine is not so Easy to turn off, failure can not be ruled out, the mechanic to the author for technical support. Troubleshooting After the car, I opened the front section of the intake manifold