I need to find my AC leak. it only works for about a week. I replaced the evap several years ago and hope that I don't have to do that again.

 

I have a sniffer but can't find a leak and it has dye in the system and I used the special UV light and glasses and not seeing it.

starting to think compressor shaft or evap again.

 

I saw an isolating kit 

 https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.amazon.com%2FConditioning-Automotive-Detector-Detection-Compressor%2Fdp%2FB07TYCT8M7&psig=AOvVaw3rwrF9QbMclVBmsU7ayrgG&ust=1685844090532000&source=images&cd=vfe&ved=0CA8QjhxqFwoTCJik39aApv8CFQAAAAAdAAAAABAF

 

Maybe some old fashioned corks would work just as well. I have a home brew vacuum pump and a small hand pump too for testing.

 

I chased a very slow leak I couldn’t find for a long time. First replaced the condenser, which was part of the problem, but ultimately it was replacing the line with orifice tube that fixed mine. Been leak free for 5 years. 

From my experience, a lot of times the front seal of the compressor starts to fail with a slow leak that can't be sniffed or see any UV dye being the pulley slings the dye off and covers the dye with dust and dirt that makes it impossible to see. Really can't sniff behind the pulley while the compressor is running. 

Edited June 3, 20231 yr by Mopar1973Man

Yeah! I have AC again. The compressor was empty not a drop of oil in it and no compression. The orifices pipe was clogged the whole system was empty, found a very small leak at the low pressure switch. Flushed the whole system. New compressor had 6 oz. Of oil already installed I added another oz to the new accumulator.