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Old 05-08-2006, 06:43 AM   #1 (permalink)
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Default Help YZ80 1989 problems

Hi All
my bike.. isn't hitting band.. when it is about to, it jumps in and out of band... and the revs go low... i've tried a few things.. i cleaned out my carbi and my air filter.. n my spark plug.. but I still have no idea what could be wrong with it.. my exhust has a few small cracks in it.. could it be that...?

it was great when it running properly.. it could beat alot of newer models specialy in a straight out drag..
but now it just goes in and out of band.. and band doesn't feel as powerful...
any help would be great..... i'm lost...

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Old 05-08-2006, 03:35 PM   #2 (permalink)
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Exhaust could be the problem. Did you try a new spark plug? How about a reed valve?
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