柴油机各缸工作是否正常,较难直接观察到,但可在发动机怠速运转中,通过以下三种方法检查: (1)听音法 柴油机在怠速运转中,用听诊器或借助金属棍,触及机体靠近喷油器的部位,倾听各缸爆发的声音。正常的声音类似敲击金属“当当”的响声。只有“嗬嗬”连续不干脆的响声时,即该缸或是供油量太少,或是没有着火。如敲击声很大,说明该缸供油量太大或喷油时间过早。 Diesel engine work is normal, more difficult to directly observe, but in the engine idle operation, check by the following three ways: (1) listening method Diesel idle operation, with a stethoscope or with a metal stick, touch the body close to Injector parts, listen to the sound of the outbreak of each cylinder. The normal sound is similar to the tapping of metal “Dangdang”. Only “嗬 嗬” continuous crisp sound, that is, or the fuel tank is too little fuel, or no fire. Such as a great percussion, indicating that the cylinder fuel supply is too large or injection time too early.