Typically when the evap has a leak, you will have a funny smell in the air vents. Also, you should be able to put the sniffer near the vent and it will sniff out trace amounts. The evap is the only leak on an AC in which you can smell it.
eit Adam question.. do you know if I need to recharge the sistem , and then look for the leak, or I can steal find it even if s empty, of course with the item leak detector,, thank you
Harold Pavon most likely will but you may be able to find the leak. The issue is going to be without Freon the compressor won't spin and therefore will not circulate the freon. You can try it and you may find the leak but most likely you'll need for freon in. You can go to Sam's and most areas and buy a 30 pound cylinder for under $100. R134 is very volatile in regards to pricing
Harold Pavon add nitrogen to the system and pump it up to about 150lb static standing pressure and between electronic leak detector and bubbles you will be able to find it, then dump the nitrogen and repair leak... Vacume down and charge....
