MTRIDER

Member
Aug 20, 2000
376
0
I have a 97 KX 80 that when you acellerate seems to be ok but as soon as you get to the top end of it , it starts to miss, that is the best way I can explain it. I have rejetted, changed reeds etc.....what the hell is wrong with this bike? I have gone leaner and richer with no change, reeds made no difference. PLEASE HELP>
 

Chili

Lifetime Sponsor - Photog Moderator
Apr 9, 2002
8,062
15
Did this just start out of the blue? is it used and always ran that way since you got it? Since you've changed the jetting it's probably safe to assume it's not a partially clogged main jet. Ignition is certainly a possibility. We put an impact on our CDI box this year and the bike (99KX80) would start and seem to run fine until you put it under a load and then you'd swear she was about to blow up, changed the CDI and all was well again. Know anyone nearby with a similar bike that you could swap out the CDI for a test? I think 91-97 was the exact same for the KX80's.
 
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