You could just leave them alone, it sounds like they are closed all the way! As for running rich to cure you might need a complete tune-up and clean the fuel injectors. Start by making sure you don't have any vacuum leaks and the control pressure regulater is getting electric and the vacuum hoses to it are hooked up right. Also make sure there is a plug in the opening over the mixture screw or you have a large vacuum leak. You don't use the brass screws except for setting the mixture screw which if you don't touch should be OK. If it bothers you they can be drilled out and replaced. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "cruznmd" <racuti1@xxxx> wrote: > Gents, > > I'm also running very rich so I've been following this conversation > intently. > > First question: The three brass set screws on the intake near > the "W" pipe. Two are for the cylinder banks and are supposed to be > fully shut. That much I know. Is the 3rd one the mixture screw? Are > all 3 supposed to be fully shut? If not, how can I best determine the > proper position of that 3rd mystery screw? I don't have sophisticated > test equipment. > > Second question: The yahoo owner before me, cranked them down so > tightly, that when I checked them, the heads snapped off all 3 of > them with almost no effort. I presume that an easy-out or similar > extraction tool will remove them....right guys?? > > Thanks, > > Rich > #5335 > > --- In dmcnews@xxxxxxxxxxxxxxx, "honda250r1989" <sky250r@xxxx> wrote: > > I have an 83' dmc w/ 19k miles. > > I tried to start it this spring and it would not fire. > > After replacing the coil and cleaning some connections, it fired up. > > But now it runs like the fuel line goes strait to the > intake,extremly > > rich with large amount of white/ brownish smoke rolling out the > > exhaust, with a clear and black gas smelling liquid leaking out the > > exhaust. > > I got it to start a few times like this and it runs smooth at above > > 3000 rpm or so, but the lower the rpm the worse it runs, needless > to > > say it won't come near an idle. > > I'm gussing this problem has some thing to do with the fuel pres. > > reg. but I am hoping to hear from some one that knows more about > > deloreans than I do. > > Thank Ryan