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AC system

Tiny
BENZ MAN
  • MEMBER
  • 1991 MERCEDES BENZ 560SEL
  • V8
  • 2WD
  • AUTOMATIC
My car is losing freon so I apply pressuer in the system ( 250 in the high side ) just to check the leak location, and for 2 days there was no change in the pressure.(2 days not using the car at all)
but when I start using the car with the AC after charging it with freon for 5days I lost the freon agin.

i still can't found the leak
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Thursday, August 25th, 2011 AT 4:19 AM

2 Replies

Tiny
DANLESABRE
  • MEMBER
  • 230 POSTS
You need to put a UV dye in the system, run the A/C a lot to let it circulate as much as it can and then use a UV light and safety glasses that are designed for finding leaks to locate where it is leaking from.
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Thursday, August 25th, 2011 AT 4:37 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Do as suggested and I would also use a gas sniffer if you cant see any leaks, and check the vents for refregrant as you may have a leak in the evaporator and you will not see this with the UV system.
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Thursday, August 25th, 2011 AT 7:19 AM

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