Check the operation of the warmup regulator. It controls the control pressure which sets the amount of fuel that flows for a given airflow. A fuel poressure tester designed for use with a K-jet is required to a proper job of this. Also check that the CO adjustment isn't way off. You can do that with a dwell meter hooked across the frequency valve. -Joe >From: "stefandmc" <stefandmc@xxxxxxxx> >Subject: [DML] Spark Plugs? > >When i start my car, it starts really rough,black smoke comes out of >the exhaust for about 1.5 min then it runs normal. To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/