Air Conditioning Help

[mikeso_81]

Hi,

I have a 2001 Hyundai Fe (6 cylinder) and I just went to the local shop to have my ac charged. Well, a week later the system is blowing warm again. Obviously I have a leak somewhere. I wanted to pump some dye into the system to determine the leak but my question is how many cans of 134a (w/dye) should I pump into the system? I have a pressure kit but want to ensure I do not put too much/too little into the system. What is the proper pressure range? Do I put enough to charge the whole system back? I just don't want to pay another $100 bucks for the shop to pump $20.00 worth of dye into the system.

Thx

[Biigpuker]

Low side pressure is about 25 to 40. The system holds about 2.5lbs so depending on the leak 1 or 2 cans should do it.