你讀讀這個鏈接文章,看看對你有沒有啟示。
http://www.pelicanparts.com/techarticles/Mercedes-W203/ENGINE-Timing_Chain_Tensioner_Replacement/ENGINE-Timing_Chain_Tensioner_Replacement.htm
還有這個
http://mbworld.org/forums/c-class-w203/530448-m271-idle-noise-rattle-video-please-help.html