central3 31 Report post Posted July 26, 2008 I have an 03 330 motorsport which I purchased a month ago. I've beed busy cleaning and polishing ever since and now I'm in the middle of a full on engine service. I've found signs of an oil leak which I need some help with. The air cond compressor has oil on the top of it and I can feel oil around the underside of the vanos area. The leak may have been an old one as there's no "free" oil around - I don't think so though. I pulled the under body engine covers off (both the plastic and alloy one's) - there's no sign of oil down there or on the bottom end of the engine. I'm thnking maybe a cam cover gasket or a seal around the vanos unit. The guy who sold it to me commented that the air cond compressor shaft seal can weep a bit and said that sometimes a service technician will add oil (sounds a bit dodgy to me). Any one know of any such problems? Quote Share this post Link to post Share on other sites
*Glenn* 854 Report post Posted July 27, 2008 Are you sure it's not spillage from when the oil filter was changed ?? Clean off and check after a couple of days. Could be: Camshaft position sensor "O" ring Vanos hose or fittings Broken or cracked breather hose Or if its further down: Oil pressure switch Oil temp switch Oil filter remote housing gasket Quote Share this post Link to post Share on other sites
central3 31 Report post Posted July 31, 2008 Thanks for that, I'll have a closer look at the areas you have identified Quote Share this post Link to post Share on other sites
central3 31 Report post Posted August 26, 2008 BMW dealer says its a rocker cover gasket - $255 or do it myself for about $60. No brainer - its going into the experts on Friday, Quote Share this post Link to post Share on other sites
