一辆仪征产黎明牌汽车大修后试车,车速在40km/h左右时,出现车速忽快忽慢的现象。检查并清洗化油器,装复后试车,故障依旧。又将汽油泵、油箱及各油管进行检修和清洗,故障亦未能排除。是什么原因引起的?根据“喘气”只在汽车中速行驶时才出现这一特征分析,这是一个在汽车中速行驶时能产生共振故障的元 After an overhaul of the Yizheng Licensed Vehicle, the vehicle was tested at a speed of about 40km / h and the speed suddenly fluctuated. Check and clean the carburetor, reload after the test, the fault still. Again the gasoline pump, fuel tank and the tubing for maintenance and cleaning, fault also failed to rule out. What causes this? According to “gasping” only appeared in the car when the speed of this characteristic analysis, which is a car can produce medium-speed resonance fault yuan