新車(chē)2個(gè)月,發(fā)動(dòng)機(jī)艙無(wú)故傳來(lái)當(dāng)當(dāng)當(dāng)當(dāng)?shù)漠愴憽M\?chē)后,打開(kāi)發(fā)動(dòng)機(jī)艙前機(jī)蓋,仔細(xì)鑒別,應(yīng)該是發(fā)動(dòng)機(jī)皮帶輪附近發(fā)出的異響,聲音怎么形容呢?就是規(guī)律的發(fā)動(dòng)機(jī)嗡嗡嗡翁……聲音中,夾雜著規(guī)律的當(dāng)當(dāng)當(dāng)當(dāng)當(dāng)……。老鐵們,指點(diǎn)一下,怎么回事?到底哪里來(lái)的聲音?是通病嗎?謝謝老鐵們