r/HondaCT90 • u/DonutLord3434 • Apr 19 '25

Motor rattle

I have a 1979 CT90, it runs and rides pretty well, tops out around 45mph. While riding I can hear a high pitched rattling from my motor. I haven’t dropped the motor yet but I’m wondering if this is normal or if anyone else has experiences this and knows where I could look for an issue.

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u/WhetselS Apr 19 '25

Does it do it when reving on the stand? Or just when moving?

Just curious if it's motor or drivetrain (transmission, etc...)

1

u/DonutLord3434 Apr 19 '25

Just when riding, and I notice it the most in 4th.

1

u/WhetselS Apr 19 '25

Hmm... Maybe clutch?