Ok. Since I installed the big bore kit to make it a 750 I have been trying to get the carbs dialed in and it been a struggle. With that said I recently changed plugs based on a set up I saw on here but they didn't have the exact same plug but I used one that crossed over. This gave me two new plugs which unveiled a strange problem that I can't explain. So like I said I have been trying to dial in the carbs so I have been riding awhile stopping unscrewing the tops of the mikuni vm34's and moving the clip then when I get threw all 5 groves on the jet needle I pull the carbs off and lower the pilot jet and start over . The problem I have been having is I seem good at the first 1/4 throttle and at work but the middle 1/2 half seems to studder or spudder , I'm not really sure how to describe it but it doesn't surge. I seem to have better luck going leaner but at some point it started idling bad and seemed to lean.i pulled the plugs and they were white so I went back up a size.incidentally I had to jump a size because I didn't have them and had to order them 35's pilot.i have them in now and have started the riding process.heres the baffling problem I'm having . When I pulled the plugs today after riding to the cruise in one was black and the other was like new. Wha? I get it home and check spark fuel and compression. I have spark at both plugs, fuel to both carbs but not sure how to check if it is actually getting to the cylinder. And I have compression . 150 on the one that appears brand new and 100 on the cylinder that is black. I will post some pics . Is it possible that I and burning so clean on the cylinder that has 150 that it looks new? I wouldn't think so. It does seem to run as good as it has been. Has anyone seen this before. I will post picks of both sets of plugs and also the exhaust. I just put 12 inch baffles in and the nut on the end of one is black and the other is a lot cleaner. Yes the correspondence with the plugs.
