Ka24e High idle, cold start

[sidewayzsilvia]

The last couple of days my car idles as 2000 rpm in the mourning, when is gets fully warm it idles normal again or atlest to what it usually is, around 800rpm. recently bought the car and since ive owned it, it usally has an unsteady idle but runs fine. Any ideas????
Also checked vacuum line and all seem fine

[rb25_s13*CHUKI]

Hmm thats kind of normal but try checking your coolant level.. Any mods on the car?

[sidewayzsilvia]

No mods on the car, coolant level is full. This mourning is was back to where it usually is, around 1600 rpm. Also is there any other vent for fuel tank. Filled up tank and it was pushing fuel out vapor canister. Does the gas cap need to vent at certain pressure before it pushed that far through system