jza800 Posted November 27, 2015 Share Posted November 27, 2015 Hi I have had my A/c apart to change my A/C compressor, after that i bourgt a gauge set and vaccum pump so i could put vacuum to the system, but after 30min of vacuum and i close the handles on the gauge set and turn off the vacuum pump, the system cant hold vacuum, it drop to 0 after about 20 to 30 sec... then i tried to oil all the o-ring on all the connections.. with no luck Is that normal after the system have been apart and just need to recarge the system with refrigerant??? Quote Link to comment Share on other sites More sharing options...
Samurai 20V Posted November 28, 2015 Share Posted November 28, 2015 Surely that means you have a leak somewhere and air is entering the system... Quote Link to comment Share on other sites More sharing options...
jza800 Posted November 28, 2015 Author Share Posted November 28, 2015 And i cant be because the system have been apart, and it need pressure to seal probely again??? Quote Link to comment Share on other sites More sharing options...
Dnk Posted November 28, 2015 Share Posted November 28, 2015 You need to test the system with UV dye and this will show up exactly where the leak is Quote Link to comment Share on other sites More sharing options...
jza800 Posted November 28, 2015 Author Share Posted November 28, 2015 i have done that, and it was leaking on the a/c pump and the connections on the condenser.. i have had that apart and put some oil on the o-rings.. and put it together again.. still same problem.. it drops to 0 within 30 sec Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 28, 2015 Share Posted November 28, 2015 It's easier to look for leaks under pressure than under vacuum, so do as Dnk suggests and PRESSURISE it with UV dye in the system and look for the leak with a UV lamp. Even a soapy water solution may find what sounds like a big leak. (Applied EXTERNALLY just in case you decide to fill the system with Fairy liquid.....) Quote Link to comment Share on other sites More sharing options...
jza800 Posted November 28, 2015 Author Share Posted November 28, 2015 i am working on to get at guy out with the right amount off liquid and fill a lillte on the system so i can start the compressor and search for leak again.. Quote Link to comment Share on other sites More sharing options...
Dnk Posted November 29, 2015 Share Posted November 29, 2015 Are there no a/c re gas places near to you or even mobile ones, they can test the system for you Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 29, 2015 Share Posted November 29, 2015 Hard to say, being that his location is "Top Secret". Why do people who ask for help do that? Quote Link to comment Share on other sites More sharing options...
jza800 Posted November 29, 2015 Author Share Posted November 29, 2015 My car are on stands, and no numb, er plates as we have winter now, so cant get the car to a regas center.. but are working on to get another guy out where that work on big aircon centers on buildings and workplaces.. waiting for answer to that.. Quote Link to comment Share on other sites More sharing options...
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