KA wont idle at start

[discoballer]

hey guys, so im new to these motors and im kinda at a loss here. its a new problem, just started a few days ago. basically the car wont hold an idle at start up. i need to keep a little throttle on it to keep it running for a few minutes, then ill let off and the revs will drop to almost nothing and then itll hold at like 500 rpm till the car is driven and warms up to operating temp and it'll idle fine. any ideas??

[wa-chiss]

for starters, check for a vacuum leak or the idle air control valve. Check the TPS to see if maybe it moved a little. Also, check the coolant level. If the HG is letting water in the cylinders on cool down, it'll take a while to burn it out. Is there any smoke at start up?