Just brought a used s2000. Was stuck in traffic, shift into first, rev the engine to about 2500 rpm, but traffic not moving, so i depress the clutch again, but when the RPM return to idle, i could feel the clutch knocking. Is that Normal? What do i do, Please help

 

Can you expand on this please?


I dun't think so.

 

It's not your clutch knocking. It's your engine's idle dipping down below the normal rpm due to the idle air control not being able to "catch it" in time, so the engine "shakes" a bit. It's pretty normal when you "blip" the throttle sometimes. The ECU may learn in time, to deal with it.
Nothing for you to do unless the engine actually stalls. You don't need any help at this time.

 

Is it bad for the engine when the rpm's drops so low that it produces a knock?

 

Can't really say if it's actually "knocking" at those low rpms. If it is, then no "knock" is a good thing, but at those rpms, they are few and far, unlike a high rpm detonation. The shaking may merely be the engine nearly stalling and just running at such low rpm, it's rough as it's fighting its own load.

 

thanks everyone!