A/C major leak, help!!!
Thread Starter
Newbie
Joined: Jul 2021
Posts: 1
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2003 W211 E500 Sport
A/C major leak, help!!!
Hello all,
For the last week or so i've been trying to figure this out but now i am stuck. I was sitting in my car right after starting it up and turned on the AC and noticed white smoke start pouring out from under the hood. I had my door open and could smell that it was refrigerant leaking, so i immediately turned off the AC. When AC was turned off, no refrigerant was leaking. I tried again to see if I could maybe see where it was coming from, but so much refrigerant leaked that i couldn't see anything under the hood.
Just to point some things out, I replaced the AC compressor about 2 years ago (new part from stealership) and did a proper AC refill with vacuum (not the cheap autozone stuff). The AC worked perfectly until now.
Today I tried again to see where it could be coming from, and this time I had refrigerant blowing through my vents into the cabin. It's strange because it's leaking so much refrigerant but the ac compressor clutch still engages. Tomorrow i'm going to try and get my hands on some gauges so I can see the high and low side pressures, but until then I'm clueless and stuck on what to do. Any ideas on what could be causing such a huge leak in the entire system?
For the last week or so i've been trying to figure this out but now i am stuck. I was sitting in my car right after starting it up and turned on the AC and noticed white smoke start pouring out from under the hood. I had my door open and could smell that it was refrigerant leaking, so i immediately turned off the AC. When AC was turned off, no refrigerant was leaking. I tried again to see if I could maybe see where it was coming from, but so much refrigerant leaked that i couldn't see anything under the hood.
Just to point some things out, I replaced the AC compressor about 2 years ago (new part from stealership) and did a proper AC refill with vacuum (not the cheap autozone stuff). The AC worked perfectly until now.
Today I tried again to see where it could be coming from, and this time I had refrigerant blowing through my vents into the cabin. It's strange because it's leaking so much refrigerant but the ac compressor clutch still engages. Tomorrow i'm going to try and get my hands on some gauges so I can see the high and low side pressures, but until then I'm clueless and stuck on what to do. Any ideas on what could be causing such a huge leak in the entire system?
MBWorld Fanatic!
Joined: May 2017
Posts: 2,290
Likes: 434
C320
No idea what's causing your leak just a minor correction. Your AC compressor doesn't have clutch. The compressor is always spinning even when the AC is off.
You might consider using flourescent dye to find the leak.
You might consider using flourescent dye to find the leak.
Out Of Control!!
Joined: Apr 2019
Posts: 11,994
Likes: 6,827
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
weird
Presurized refrigerant can not be leaking like mad for very long...we are taling minutes, not days - You say you see it leaking through the inside vents so it has to do with a pin-hole in your evap coil
