a little bit of smoke from engine

I posted this in the cavalier forum but it seems that no one knows in there....and i cant find it anywhere else.....

i just got my girldfriends car (92 cavalier) on the road after its been sitting for 3 years. everytime we come to a stop, a little bit of smoke comes out from under the hood, but only on the drivers side. i replaced the thermostat. I was thinking, its either because there is caked up oil around the head, one on the hoses is bad or its a blown head gasket. but it it doesnt over heat. anyone with info please help.

try driving for a while, pulling over and opening the hood to see where its comin from?