View Full Version : How to Find A/C Leak

Greasy DeLorean Mechanic
09-10-2013, 02:25 PM
All sorts of exotic theories have been posted to find an A/C system leak, but it's really quite simple:

Pressurize the system with an ordinary air compressor through one of the service ports, using a service hose with suitable air compressor fitting added:


Spray down every possible leakage point with soapy water, then look for bubbles like this:


Works to find leaky tires too.

Bill Robertson

11-17-2014, 08:01 PM
Use dye and a black light, easier and more efficient.

11-17-2014, 09:07 PM
Soapy water worked for me. Actually, I was too lazy to mix soapy water up so I just used windex.