2012 focus a/c short cycle

I'm stumped I went to recharge my a/c now its short cycling, after i was done i took it for a spin and when i got on it i heard a hissing sound like air coming out a tire. did i try to fill on the wrong port. i used the one near the firewall. help its hot!!! :angryfire

Well that's NEW !!
What Model !?

its an SE, I figured it out there was to much pressure in ac line (lots of air)