if its acting like it has a rev limiter you might need a new spark plug..
i took my airfilter out and rode it up the rode without it and it wasnt doing it then i cleaned it and it still does it a little bit. also i cant find any cheap 38 tooth rear sprokets anybody got any links?
. okay not to sound like a dumbass but war kinda oil my dad just told me told me to spray it out with a water hosei know ur prob, i run a k&n too, u just gotta clean it again and oil it lightly!, ur over oiling it, i have done it before
you need to get a K&N filter cleaning/oiling kit
Is the filter foam, like sponge? no its k&nok..in light of everybody tossing random answers like some kind of magic 8 ball.. please answer the following questions...
Is the filter foam, like sponge?
what size tires did you have on the back before and what size do you have now?
What gearing do you have now?
what deoes your spark plug look like?
first, 13/40 is stock, and if you have 14/40 now and go to 13/38 you're going to change almost nothing.
simple math time!!!!!!!!!!!
40/13=3.076 which is stock.....
so if you have the 14/40 you're saying right now
40/14=2.857
38/13=2.923
that change of about .07 in the gear ratio is pretty negligible.
now if you put that 38 rear sprocket with the 14t front
38/14=2.714
this should make a difference, you can make even more difference going to a 15t front sprocket
the lower the number when you divide the rear sprocket by the front sprocket, the more top speed you will have, at the cost of some low end.