i dont know if its common problem or not(maybe not even a problem)
but, my s2000 seems like its vibrating when its at idle.
it looks like its vibrating only when the rpm is under 1000.
sometimes i can tell it just by looking at my sift knob,(its shaking a bit)
what can i do to reduce the vibration?

 

i'd say thats normal my s2k does that too. check your motor mounts and tranny mounts, if they are okay then you are fine.

 

o.O i see, i just hate that feeling you know

 

Make sure your valves are well adjusted too.

 

Mine doesnt vibrate ALL the time, it does it for like 2-3 seconds, stops idles regular then does it again.