一辆桑塔纳2000轿车,其发动机总成在数月前进行了大修,出厂后一直运转正常,但驾驶人反映最近两天早晨发动机起动后工作不稳,有时会自动熄火,但如果人为控制加速踏板,不让发动机熄火,发动机则一天工作正常,如果发动机熄火后,再次起动则十分困难。 A Santana 2000 sedan whose engine assembly was overhaul a few months ago has been working normally since the factory but the driver reflected the unstable work after starting the engine in the last two days and sometimes the machine would be turned off automatically. However, if the manual control of the accelerator pedal , Do not let the engine stall, the engine is working one day, if the engine is off, it is very difficult to start again.