发动机怠速运转好坏,是判断其工作正常与否的标志之一。在怠速运转时,一般发动机的转速为400转/分左右(能看清风扇转动的叶轮为宜)。怠速工作不正常,不仅能使耗油量增加,而且给驾驶操作带来不便。 怠速不良的现象 (1)发动机起动后,油门不能突然放松,容易熄火;(2)调不出怠速,发动机发抖,运转不稳;(3)怠速超过500转/分以上时,无法调小, Engine idle speed is good or bad, is to determine whether one of the signs of its normal work. At idle, the general engine speed of 400 rev / min or so (to see the fan rotating impeller is appropriate). Idle work is not normal, not only can make the fuel consumption increase, but also to the driving operation inconvenience. Idle speed of the phenomenon (1) engine start, the throttle can not suddenly relax, easy to turn off; (2) can not adjust the idle speed, the engine shudders, unstable operation; (3) idle speed of more than 500 rev / min above,