A/C Leaks Freon after Compressor Install
10-19-2009, 08:38 PM
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A/C Leaks Freon after Compressor Install
Hey guys,
I just installed my broken compressor with a new rebuilt unit, I did not have a vacumm so did not vacumm the system after installing the new compressor. 5 Mins into running it (which i did not even notice at first) the compressor leaked most of the freon into the garage floor (I believe it is coming from evac valve in the back but have to confirm tomorrow).
Do you guys think its because of the air thats in the system that is causing the compressor to leak freon? Has anyone else experienced something similar? I have checked all the lines etc and they are all tightly secured the freon seems to have leaked from the backside of the compressor housing. Thanks!
I just installed my broken compressor with a new rebuilt unit, I did not have a vacumm so did not vacumm the system after installing the new compressor. 5 Mins into running it (which i did not even notice at first) the compressor leaked most of the freon into the garage floor (I believe it is coming from evac valve in the back but have to confirm tomorrow).
Do you guys think its because of the air thats in the system that is causing the compressor to leak freon? Has anyone else experienced something similar? I have checked all the lines etc and they are all tightly secured the freon seems to have leaked from the backside of the compressor housing. Thanks!
10-19-2009, 10:49 PM
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Re: A/C Leaks Freon after Compressor Install
Not to familiar with AC, but you need to evacuate all the air out before you add freon. I pretty sure that R134 and R12 uses different oils, you should use the correct one for your system.
10-20-2009, 07:59 AM
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Re: A/C Leaks Freon after Compressor Install
I hear R12 Cools better is that an affirmative? If yes can I just get R12 (if I can source that stuff) and put it into my R134 system and it will work besides the oils being different is that gonna cause any other issues?
10-20-2009, 08:27 AM
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10-20-2009, 03:24 PM
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Re: A/C Leaks Freon after Compressor Install
R12 > R134
why wont u let me be? Oh and the system has to be evacuated first BEFORE replacing the dryer otherwise u will get a shot of ref up ur nose.
why wont u let me be? Oh and the system has to be evacuated first BEFORE replacing the dryer otherwise u will get a shot of ref up ur nose.
10-20-2009, 04:08 PM
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Isn't it also more exspensive ? Why don't you save your money and just use R134. It cools pretty well in my D series to me.
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10-20-2009, 04:59 PM
#8
Re: A/C Leaks Freon after Compressor Install
You can't put R12 into an R134a system or vice versa. They are incompatible.
???
You need to evacuate the system after installing the receiver/dryer, so why not install it prior to evacuation?
Oh and the system has to be evacuated first BEFORE replacing the dryer otherwise u will get a shot of ref up ur nose.
You need to evacuate the system after installing the receiver/dryer, so why not install it prior to evacuation?
10-20-2009, 06:44 PM
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Re: A/C Leaks Freon after Compressor Install
Yes after doing some research I found out that you can indeed use R12 in a R134 system given that you flush out the R134 oil completely out and use R12 compatible oil. And you will need to evacuate the system PRIOR to install because the system is under charge and pressurized, if you try to open the line that goes to the dryer you will depressurize the system and evac all that harmful stuff into the atmosphere so you will need to EVAC the system first so it is completely depressurized and then you can go ahead and install the dryer then again do another vacumm to get the air/moisture out...I cant believe i am answering my own questions here.
The issue with the freon or oil leak in my brand new rebuilt compressor is still pending anybody has any ideas? Beside the pressure safety valve in the back of the Compressor is there any other ways the freon/oil can leak out of it??
10-20-2009, 07:09 PM
#10
Re: A/C Leaks Freon after Compressor Install
And you will need to evacuate the system PRIOR to install because the system is under charge and pressurized, if you try to open the line that goes to the dryer you will depressurize the system and evac all that harmful stuff into the atmosphere so you will need to EVAC the system first so it is completely depressurized and then you can go ahead and install the dryer then again do another vacumm to get the air/moisture out
I cant believe i am answering my own questions here.
10-20-2009, 07:38 PM
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Re: A/C Leaks Freon after Compressor Install
Do me a favor and do not post after doing some more research on this. Thanks!
10-20-2009, 08:53 PM
#12
Re: A/C Leaks Freon after Compressor Install
The following text excerpt is taken from the Haynes Techbook Automotive Heating and Air Conditioning:
First, if the refrigerant was never a liquid inside the A/C system, it could not cool your air. Cooling comes from the heat removed when the refrigerant transitions from the liquid to the gas state.
Second, if you are going to work on the A/C system, the refrigerant first must be drained/recovered/removed rather than released into the atmosphere. This removal of refrigerant must be done professionally at a shop and is different from evacuation. After refrigerant is removed, you can then open the system and work on it (e.g., replace the compressor). When the work is done, the system should be flushed so as to remove possible debris produced by the failed compressor, and then the receiver/dryer must be replaced. At this point, the system would be evacuated to remove air and moisture and to check for leaks and then recharged with the specified amount of refrigerant and oil. With your vast knowledge of A/C systems, why did you decide to skip the critical evacuation step? Do yourself a favor and take your car to a shop for A/C work to avoid doing any more damage.
inside the A/C System not liquid so what is there to drain exactly? Evac stands for extracting the freon "GAS" from the A/C system. Not draining it.
Second, if you are going to work on the A/C system, the refrigerant first must be drained/recovered/removed rather than released into the atmosphere. This removal of refrigerant must be done professionally at a shop and is different from evacuation. After refrigerant is removed, you can then open the system and work on it (e.g., replace the compressor). When the work is done, the system should be flushed so as to remove possible debris produced by the failed compressor, and then the receiver/dryer must be replaced. At this point, the system would be evacuated to remove air and moisture and to check for leaks and then recharged with the specified amount of refrigerant and oil. With your vast knowledge of A/C systems, why did you decide to skip the critical evacuation step? Do yourself a favor and take your car to a shop for A/C work to avoid doing any more damage.
Last edited by Former User; 10-20-2009 at 09:02 PM.
10-20-2009, 09:12 PM
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Re: A/C Leaks Freon after Compressor Install
From what I know you may see a 3 to 5 degrees difference. R12 is colder, I remember as a kid, ice would form around the vents on R12 AC system. No kidding.
10-20-2009, 11:01 PM
#14
Re: A/C Leaks Freon after Compressor Install
R12 cools better, but the system runs at different pressures, so it's pretty much best to just use what the system was designed for and make sure it's clean, dry and has a good vacuum before charging it. R12 is expensive as heck to get if you can find it. A guy around here had like 8 little cans and a half a large tank (the kind that looks like 2 gallons or so) he wanted like $500 for for all of it.
10-21-2009, 08:59 AM
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Re: A/C Leaks Freon after Compressor Install
R12 cools better, but the system runs at different pressures, so it's pretty much best to just use what the system was designed for and make sure it's clean, dry and has a good vacuum before charging it. R12 is expensive as heck to get if you can find it. A guy around here had like 8 little cans and a half a large tank (the kind that looks like 2 gallons or so) he wanted like $500 for for all of it.
Oh yeah its expensive but down here in Florida the colder the A/C the better the living
10-21-2009, 09:00 AM
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Re: A/C Leaks Freon after Compressor Install
The following text excerpt is taken from the Haynes Techbook Automotive Heating and Air Conditioning:
First, if the refrigerant was never a liquid inside the A/C system, it could not cool your air. Cooling comes from the heat removed when the refrigerant transitions from the liquid to the gas state.
Second, if you are going to work on the A/C system, the refrigerant first must be drained/recovered/removed rather than released into the atmosphere. This removal of refrigerant must be done professionally at a shop and is different from evacuation. After refrigerant is removed, you can then open the system and work on it (e.g., replace the compressor). When the work is done, the system should be flushed so as to remove possible debris produced by the failed compressor, and then the receiver/dryer must be replaced. At this point, the system would be evacuated to remove air and moisture and to check for leaks and then recharged with the specified amount of refrigerant and oil. With your vast knowledge of A/C systems, why did you decide to skip the critical evacuation step? Do yourself a favor and take your car to a shop for A/C work to avoid doing any more damage.
First, if the refrigerant was never a liquid inside the A/C system, it could not cool your air. Cooling comes from the heat removed when the refrigerant transitions from the liquid to the gas state.
Second, if you are going to work on the A/C system, the refrigerant first must be drained/recovered/removed rather than released into the atmosphere. This removal of refrigerant must be done professionally at a shop and is different from evacuation. After refrigerant is removed, you can then open the system and work on it (e.g., replace the compressor). When the work is done, the system should be flushed so as to remove possible debris produced by the failed compressor, and then the receiver/dryer must be replaced. At this point, the system would be evacuated to remove air and moisture and to check for leaks and then recharged with the specified amount of refrigerant and oil. With your vast knowledge of A/C systems, why did you decide to skip the critical evacuation step? Do yourself a favor and take your car to a shop for A/C work to avoid doing any more damage.
Ron Please stop...just stop already.
10-21-2009, 09:43 AM
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Re: A/C Leaks Freon after Compressor Install
You are rejecting good information from one of the more knowledgeable people in this thread.
If you dont want to take the correct advice, and answer yourself with incorrect ideas, why post the question?
just do it urself ur way and u'll be back asking why does my AC not work any more, or why does my AC leak...
If you dont want to take the correct advice, and answer yourself with incorrect ideas, why post the question?
just do it urself ur way and u'll be back asking why does my AC not work any more, or why does my AC leak...
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