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  #1  
Old 09-11-2018, 10:34 AM
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Still leaking air!!!

Changed rear bags and still leaking air!!! Checked lines connections with soapy water and replaced the rear air springs and still is leaking???? Any tips on finding the leak?????
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Old 09-11-2018, 11:11 AM
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More soapy water.
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Old 09-11-2018, 11:30 AM
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I'm not familiar with the system but if there is no external leak then it must me internal(solenoid or check valve leaking back)
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Old 09-11-2018, 01:38 PM
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Is it only a rear axle or two axle of air suspensions?
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Old 09-12-2018, 12:14 AM
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Just the rear
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Old 09-12-2018, 12:33 PM
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,https://www.realoem.com/bmw/enUS/sho...diagId=33_1305


Here is a pic of the whole system, Spray soapy water in each connection joint. If you can't find any air escaping from any of the joints or airbag, it self-connect the inpa reader or what you have that is capable of reading the sensors. Make sure that the sensors are reading about the same and that they are good. Sorry I don't have the actual parameters that its need to read.
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Old 09-12-2018, 01:00 PM
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How long does it take to lose all the air? Did you confirm the bags you replaced were leaking? If so, first troubleshooting to check your work. Assume there are no coincidences.
Not unheard of that new bags leak.

If you didn't verify the source of the leak, it could have been a problem with the compressor or if the the bags were leaking for a long time the compressor could have been damaged and is a second leaking source.

As mentioned, soapy water is a good way to troubleshoot. Since not all soapy water is created equal, I usually loosen a line so there is a very small leak and see if the soapy water is going to make bubbles. And I test each connection several times as it doesn't always make bubbles. I wonder if the solution used to blow bubbles would be effective without a test. The risk in loosening a line is that it leaks when tightened back up or worse, after some time as passed so you have to go back in and start over finding the leak.
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Old 09-12-2018, 01:26 PM
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I thought of the bubbles stuff to lol
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Old 09-12-2018, 01:57 PM
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Check the small hose in the little air reservoir in the trunk - I assume you took that off to let the air out of the old ones? Sometimes that part is worn and can leak if not attached properly
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Old 09-13-2018, 12:04 PM
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Thanks
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