回複：請教發動機震動的原因

區別發動機非正常抖動的方法：
1。misfiring: 有脈搏狀感覺，隨轉速升高而減弱。
2。rough idle: idle changing itself all the time.
3. engine mount: apply parking break. start enging and holding break padle firmly then shift from park to reverse back and forth. if you hear and noise and feel the engine move back and forth that is the mount