I had that problem plus smoke on startup for about 3 or 4 seconds. Vavle guide gaskets fixed it. Because the mechanic has to go in there I replaced them all. No more smoke. Bob -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.pairlist.net/pipermail/mbcoupes/attachments/20060509/a43d62b3/attachment.html