[MODERATOR'S NOTE: The archives have a lot of good information on this as it has been discussed fiarly extensively in the past. The best search engine to use for searching the archives is the Google engine linked on the DMCNews.com web site.] I have an 81 DMC and when it get running for about 10 min or so it starts to idol very poorly. The oil pressure and RPM's go up and down while sitting at a stop. When I get going again it goes away, but every time I stop again it comes back. I thought that it might need a tune-up but maybe something else. Any ideas??? Thanks mwwilber2003@xxxxx Please let me know what you might think this could be.