For any of you who pay attention to my posts here, you'll know that I bought a 1994 XR650L a few weeks ago to keep my other 2001 company, and to have as a spare bike when needed. (Right now the KTM has a dead battery and the other XR is waiting a chain slider for the swingarm, so it's the only one of the three I'm able to ride.) To call the bike "cold blooded" would be an understatement. It didn't want to idle for about 15 minutes after starting it, although it ran just fine once underway. I first checked the valve adjustment on it. Although one exhaust valve was a little tight and all of them were a tiny bight tighter than I prefer, adjusting the valves didn't change anything. I still had the old jets from when I rejetted my 2001, including the ones that came out of that bike which had the same markings as the replacement jets that went back into it. I just had to find the jets somewhere inside eight boxes of stuff in my garage from when I moved two years ago. I emptied all eight boxes and the jets were found at the bottom of the eighth one. Wouldn't you know it. So I stuck the bike on my makeshift bike stand, took the seat, tank, and side covers off, pulled the carbureator out the side (without disconnecting any lines) and opened it up. Everything looked good enough, but in taking the jets out and comparing to the ones to go back in, it was clear that both the old pilot and main jets were quite a bit smaller. The pilot I think had a 50 on it, replaced with a 58, and I'm not sure exactly what marking was on the main jet, but I replaced it with a 155. The old main jet had a significantly smaller opening. The idle mixture screw was also set at 1 3/4 turns, so I changed that to 2 1/4 turns. Once all back together, I went through the normal starting procedure of finding neutral, fuel on, choke on, key on, then hit the starter button. It started right up. So after about 10 seconds I let the choke off to see what happened. Before it would have died immediately. But this time it just sat there idling happily. The bike has been transformed. This morning it was the same. Choke to start it, then the bike ran just fine and idled right away, with no significant amount of warmup time. I haven't ridden it enough to detect a big change under power, but it feels good to ride. I guess the next step is to put the White Brothers pipe on it in place of the modified stock pipe that it has how. Then tires and I think I'm done. Someday, I expect to sell one of the to XR's, but I'll have to decide whether it's better to keep the older one with fewer miles or the newer one with more miles.