When you have a a/c leak alot of times there will be a oil build up near the leak usually where theres a seal or the compressor itself (like mine is ) you can buy 134 with dye color in it , you put in the system and run the car for a couple of days , then use a black light (works better at night) and the dye will show you where the leak is ( parts america sells this) where are you located ?? good luck

 

Doug,

As Brian mentioned, the oil that lubricates the compressor leaks out with the refrigerant, so look around for it. Look on the compressor especially to see if it is grimy. Also, if the refrigerant is gone, and the oil with it, running the compressor will ruin it. Though the compressor will probably not run if there is no pressure in the system, that is, the pressure cannot build up. The service manual has a lot of info on troubleshooting and testing the AC system. I have some tip on the web page below.

http://www.stealth316.com/2-ac-tips.htm

How to remove compressor:

http://www.stealth316.com/2-ac-compressor.htm

Source for remanufactured AC parts:

http://www.hancockindustries.com/

But this is absolutely true: If the refrigerant level is low then there IS a leak somewhere. Refrigerant is not consumed and does NOT normally leak out. Usually a bad seal or o-ring is the culprit.