听发动机的声音,可以借助长柄螺丝刀,使其金属端顶在机体外壁听诊部位,木柄端贴近耳朵,这样得到的声音比较明显,更容易准确地判断发动机的技术状态。 (1)听诊部位在机体气门间隙处,低转速时,如果有轻微金属敲击声,近 Listen to the sound of the engine, you can use a long-handled screwdriver to make the metal tip in the outer wall of the body auscultation site, wooden handle end close to the ear, so the sound is more obvious, more accurately and accurately determine the technical state of the engine. (1) auscultation site in the body valve clearance, low speed, if there is a slight metal percussion sound, near