[Dennis Mosley]

When a carburated engine (no Choke) gets warm does it tend to idle slower?

Reason for question:

I have a rochester carb system on my car and it does not have a choke installed. When it is first started it seems to idle a little high but nothing too wild but after driving a few miles it wants to idle at a much lower rate. It hasn't died on me or anything but I think if I didn't give it a little gas while I am waiting at the traffic light it would.