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Message: <blockquote data-quote="John_Smith" data-source="post: 440256" data-attributes="member: 15372">I have already posted on page 18: <a href="http://www.bmwclubmalaysia.com/forums/showthread.php?t=34048&page=18" target="_blank">http://www.bmwclubmalaysia.com/forums/showthread.php?t=34048&page=18</a> Maybe it was overshadowed. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin    :D" loading="lazy" data-shortname=":D" />Anyway, rough idling solved. It's due to cracked crank case vent pipe, running from valve cover to oil separator.  (Part #:11151703775 , Ref: <a href="http://www.realoem.com/bmw/showparts.do?model=CD12&mospid=47447&btnr=11_1487&hg=11&fg=15" target="_blank">http://www.realoem.com/bmw/showparts.do?model=CD12&mospid=47447&btnr=11_1487&hg=11&fg=15</a> ) The crank case vent pipe was hardened already, so I think when the mechanic dismantle the vent pipe, it caused a minute crack on it.I'm still hunting down the engine vibration problem during idling. I suspect the timing was not set properly. So, I'll continue troubleshooting tomorrow. I will feedback once I've found the root cause.As for the Vanos grinding noise, I felt that gradually it is getting lesser and lesser. So, I guess that's what running in is. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>

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