radiator questions

[ThatKids96GT]

soo a while ago i was leaking antifreeze but i used a stop-leak that supposedly seals all antifreeze leaks and shit and it worked but it still hisses like there is some kind of leak but it doesnt drip? and the level stays the same for the most part? any idea of what it is? any input is apreciated

thanks, matt

 

[vermilion]

have you checked the radiator cap?

 

[AaRoN]

have you checked the radiator cap?