2001 DS650 Newbie Question
#1
2001 DS650 Newbie Question
Hi All, I just bought a 2001 DS650 and have a couple of questions still to resolve even after searching the forums. First of all, here is the setup: Big Gun Race exhaust, Woods CDI box, jetting unknown, K&N air filter and prefilter, 3 holes drilled in airbox cover, other than that the bike seems to be stock. I've replaced the cooling fan ( it was dead). I started the bike tonight after I got the fan back in to see if it would come on- to check the thermostatic swith. I used a jumper to check fan operation and it works fine. However when the bike was idling, I noticed that the exhaust pipes at the head prior to the collector were glowing red. The bike had only been idling for about two minutes when I noticed it. I figure this is not normal. I did a search on mixture and found a post that said that a rich mixture would cause this. I was thinking that a lean mixture would cause it to run hot. Which is it??? Also I started thinking that maybe an exhaust leak at the head might also cause it. Is a gasket required on the exhaust pipes. I had the pipes off when cleaning up the bike and I did not notice any gaskets in there. I tried to richen the idle mixture ( center screw on the bottom of the carb...I think???) but it did not have an effect. I don't know what jets are in it but the PO said that the jets were replaced at the dealer when the pipe was installed. Any help would be appreciated.
#2
2001 DS650 Newbie Question
Actually, it could be lean or fat. A lean mixture will lead to increased exhaust gas temps, while running rich can send unburnt fuel into the exhaust. There, it can burn and light your pipes up.
I know that doesn't help you much, but you might as well just mess with it until you get things figured out.
I know that doesn't help you much, but you might as well just mess with it until you get things figured out.
#3
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