Sound when you turn on the air conditioner?

Friends air conditioner hose had burst, I made it today, I pressed 250g of gas, I did not fill it completely because it was obvious that there was a leak in it, they squeezed something colorful inside it, if there was a leak, it would sound like there was a gas leak from the air inside, there was no such thing before. Could it be because it's less?

Don't you have friends with a knowledge?

There shouldn't always be a voice, it only comes when it first opens, then it gives its normal mass.

My teacher always comes a little, decreases a little, constantly, it sounds like tısss.