I bought a Makuni Carb for an '87 KDX off E-Bay the other day to try on my '84 KDx. The two carbs were very similar with the only differences being the choke lever and the idle adjustment is on the opposet side. I put the carb on the bike and it started great, but when I tried to ride the bike it felt like mush, not throttle response, almost sounded like it was missing, very sluggish. So I thought that the jetting may need to be changed. So I opened the old carb and swapped the little jet, and the bottom of the ventury. Still the same thing. I pulled the plug, it was clean and looked brand new. The ground strap was a dark blue color. It looked like it might be alittle lean maybe. Question is, are these the same size carb? I noticed the venturi needles are alittle different in size, the old being the fatter of the two, as the slides are alittle different also. I kept the slides with thier original carbs. Any ideas on the poor performance? Is there something I'm missing?
Jon
Jon