Smoke rising out of 1993 Caprice engine hood?

preet s

New member
It's a 1993 Chevrolet Caprice with 250K plus miles on it. I have noticed coolant near the upper pully housing (just where the thermostat is I believe), now if I drive it on city roads for like 15 minutes and then park it, smoke rises from right hand side of engine compartment.
Also I have been adding coolant in the reservoir like once a week.
Any idea what could the smoke mean, or what would be repair cost ? Is it worth repairing ? Other than that, the car runs great. Many thanks in advance for the advice.
 
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