[MyFirstZ]

I've never found an a/c sniffer that is accurate.

If you can see all the areas that the high and low pressures line bolt to that will use o-rings to seal you can try spraying windex or some sorta of soapy water to see if it bubbles otherwise dye is the best.

You can also have a cracked evaporater and be leaking in the heater box sometimes you can see dye where the drain tube would leak out to.