别克昂科威发动机盖渗油,拆下上盖,清除盖内的积碳。密封垫是塑料质的,有些软。漏油原因,密封垫有些老化,紧固螺丝有些松动。用化油器清洗剂清理完积碳后,密封垫上下面打密封胶(硅质红色的)。用扭力扳手按规定顺序和扭力拧紧就可以了。
https://qc.dianpusou.com/tag/%e5%86%b0%e7%ae%b1%e7%9a%84%e8%92%b8%e5%8f%91%e5%99%a8%e5%9d%8f%e4%ba%86%e8%a6%81%e5%a4%9a%e5%b0%91%e9%92%b1