i found out in warm weather my 07 860 fouls the plugs lots ... so riding in the trees is not easy when the plugs foul.... what can i do... where do i start to fix this...it was like +10 ... 0 and cooler it doesnt happen
have had the same problem sort of. when you take the spark plug cap off the plug, are you finding lots of black carbon deposits on the plug. if so you may have a bad plug wire to cap connection, which was very common on these sleds. makes it run like crap. you can just change the cap as changing the wire is a pain in the azz. when pulling off the plug cap you are not supposed to twist or force it on as that breaks the carbon wire. may not be your problem but easy to check. your jetting should be ok, if it runs fine in the open, unless you have other problems.
close the carb heat
close the carb heat
doesnt the dpm suppost too to take care of that ... stock jets are 470 ... i am using 480....
when i had my 07 xrs i ran 450s and timing advanced 2 extra degrees