the smoke from bottom of my car on 2000 Kia Spectra

i got a smoke coming out from the bottom of my car but is not leaking from oil its the anti freeze and also the radiator have a cap so theres something like to much pressure

Asked by for the 2000 Kia Spectra
if the smoke or steam is comeing frome the over flow its probb ly just th e cap most parts are designed for the majority but if its in a really hot place or cold you might want to got to youre lacal autozone theey will give you an option an caps and therm?????