Engine Size: 350
Refrigerant Type: R134
Ambient Temp: 110
Pressure Low: 0
Pressure High: o
Country of Origin: United States
I put a vacuum pump on this completely discharged system twice and pulled a 30 minute draw each time . When I shut the pump off ( after closing valves ) I loose all the vacuum within 2 or 3 seconds . I was going to use compressed air to find the leak , but then I read that was not a very good idea because of possible system flammability issues . On the other hand the previous owner told me the system has been discharged for 5 years , so it has had air for a long time and maybe there will be no difference at all in using compressed air at this point . I do not have access to a sniffer and want to do this right , so what is the best way to to approach this ? A leak that fast must be huge and easy to find . Thanks for any help .
I can't see any flammability issues, the issue with using air is that typically compressed air is not dry, like nitrogen would be.
What was your vacuum reading during this 30 minutes? I would think with a leak that large that your numbers wouldn't be where they should.
Thanks for the reply .
On the flammability issue the following caution was from another site . I don't know if it's technically accurate .
You've pulled a vacuum so now all the R-134a is gone. Go ahead and use air, though a dry gas would be better. Replace the drier in any case after you fix the leak.
Got it ... thanks
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