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Message: [QUOTE="Kyleb15, post: 880140, member: 56354"] Hi I have a 2000 Yz 125? It has a FMF fatty, powercore 2 silencer and a 136 big bore kit. First off, I took it out to my local track about 3 weeks ago and it was snowing. By the time we got there the snow had stopped and it was 40F. I took the bike around the track just to get the groove on again. This was in like 1 st gear, not too fast. So I bring it back to the track after that lap and wipe my goggles off. I try to start the bike and it won't start. So i put another plug in it and off she go's. Well it was running kind out rich and I had a hard time keeping it running, but lasted the day. So, i get it out about a week ago to test out my new spprockets. Take it out in the feild and try to break in the sprokets. Then i tried to do a WOT test run. Imediatly it is'nt real peppy and when i let off the gas it just wanted to die. Mind you it is 50F. It lets out a lot of smoke and does run like a properly jetted bike. I know it is not the top end because it has but 6 hours. So, when it was 40F it is really rich. When it is 50, it is better but not right. I tried RAISING the needle CLIP, but it didnt have nush off and affect.All of my local stores dont have main jets. So, I getting two sizes lower of pilots tommorow. Currently I am running a 35 Pilot, and a 370 main, with the needle at the 2nd from the top slot. It is going to be 60 tomorrow so I need to get it figured out so i can ride. The plug is a B8ES. If it wore lean it would be whitish but it is dark brown. When it was 40F the plug was black. To me this signals a rich condition, and since it is getting warm I should lean it, right? Please any suggestions!!!!!!!!!!!!!!!!!!!! [/QUOTE]

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