[Awol469]

Ok I got a 96 xcr 600 with about 300 miles on rebuild. Took it out this past weekend and when I would let off the throttle it would hold at about 4000 rpm for a few seconds then idle back down to about 2000 rpm. Its never done this before, any ideas what could be causing this, I thought maybe it could be carb freezing up, rode in a lot of fresh powder, but I let it sit in the garage over night and all next day, and it still did when I pulled it out to put the wifes car in. Any help would be greatly appreciated

 

[kccats]

Why did you rebuild? You could have an air leak!

 

[Mach 1 Guy]

sticky carbs? staying open longer? hmmmmm...... not too sure

 

[xxPOLARISBOYX]

Try synrinizing the carbs, Put the needles on each carb at the same place, one carb could be opening up and closing at different times

 

[xcrrider]

Try synrinizing the carbs, Put the needles on each carb at the same place, one carb could be opening up and closing at different times

very true....thats the same thing i did to my sled when it did exactly what this guy is talking about.....it worked.....but i got different carbs later on anyways :thumbsup:

 

[Awol469]

He thought the crank seal went out, needles are all in the same spot, it never did this for the first 250 mile or so just started the last 40-50 miles, I'll pull the carbs this weekend and go through em....