I just bought a old Ninja ´86 model to be exact. The motor seems to fail sometimes and i cant get it to go over 3000 rpm. This happens to often and I have already checked and replaced the following:
Replaced the spark plugs,
Replaced the aspirate
Checked the wire connections.
and previus owner replaced the spark coil.
Is it possible the CDI box is failing or what could be wrong?
Please help me if possible.
Probably a gas delivery problem to the carbs. Check the lines and check for a filter in the line or at the carbs. Something is stopped up and it can't get enough gas to go any rpms.
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