Question on a 01 CR250 I just got...

[wrist rocket]

I just picked up a 2001 CR250. It's in pretty decent shape and starts up 1st kick everytime. I'm wondering though, how noisy are 2-stroke dirtbike motors supposed to be? I don't mean the obnoxious exhaust note either - it just seems to me that a 2-stroke should be relatively quiet since it has few moving parts.

[Throttle]

They make some noise, but it's kinda hard to firgure out if something is wrong without hearing it though. Wish I had more info.