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thanks for the replys on my 80 650xs you guys talked about the trigger PU I went after it & I touched the rotor with some carbon tec & immediately it perked up so I test drove without air boxes off & it ram a whole lot better got the RPMs up to about 6500 but still has a lag so I will probably...

I have a 80 XS 650 it will not run at high engine speeds it will rev up fine on kickstand but while running on road just wont accelerate I cleaned carbs but no luck it idles fine crosleyguy

:mad:bought a 80 & 81 xs 650 one runs ok & the other skips at acceleration the bike idles fine I took carbs apart cleaned out jets & passages but wont accelerate doesn't seem to run over 4000 rpm but will go at normal speed on road im new to this bike as mybest skills are with the Honda cb...