My air conditioner system not blowing cold air. on 2003 Kia Optima

Tried to recharge air conditioner but apparently the charge leaked out. Compressor turns when the system is charged, but will not run the next day and pressure gauge shows low. What is the most likely cause?

Asked by for the 2003 Kia Optima
Autozone may offer and A/C leak detector kit which includes a sniffer in the Loaner Tool Program. There are two ways and I employ both when I am looking for a leak. One is ultr-violet dye injected into the system, and the other is a sniffer. Ask if they offer it, but if not, you will have to either buy or rent it, or take it to a shop for service. I have discovered that the service port Schrader valves leak much more often than they should. Make a solution of a litlle bit of dishwashing liquid and water. Remove the service port caps and spray into the port. If it produces bubbles, you have found the leak. You can use this same soapy solution to spray all accessible connections and parts and where ever bubbles appear, there is your leak.
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you have a system leak, i adv you seek prof help on finding it to save yourself freon money. this leak can be from an o ring to hose to compressor