KIA GRANG SPORGE AIR FAILURE 1999

Friends, I have a Kia Sportage Grand and the air conditioning system I just loaded with gas, cool perfect but the air exit is very low, it almost does not come out air, try to look for the pollen filter, I do not find it or does not have it, someone passes or has an idea of ​​the problem, I have the vehicle manual but there are no details of the air system.