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Thread: Common AC leak locations? Can't track mine down on a rebuilt system R134 conversion

  1. #1
    Join Date
    Jul 2013
    Location
    CT
    Posts
    434
    My Cars
    1989 325i 4 Door 5sp

    Common AC leak locations? Can't track mine down on a rebuilt system R134 conversion

    Hi all

    My R12 system was leaking - I put UV dye in it and saw some at the compressor. That lead me to a comprehensive R134 converstion. Replaced compressor, condensor, rec/dryer, exp valve and one of the hoses. Tried to replace more but kept getting set the wrong ones so put it together, vacuumed (held just fine) charged and drove. Cools fine... but leaks. I tried UV and I tried a sniffer and can't locate it. Which is surprising because it leaks out in about a day or two.

    Wondering if there are common leak locations that might be good places to focus my efforts.

  2. #2
    Join Date
    Dec 2012
    Location
    Grandview, MO
    Posts
    493
    My Cars
    1989 Bmw325IC
    A leak that big should be detectable just from the oil leaking. Do you have any oily parts? Then how about the evaporator coil?

  3. #3
    Join Date
    May 2010
    Location
    Officially in Tampa
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    2,137
    My Cars
    87 Cabrio & 87 ETA
    Check any hoses you did not replace. My system bled through the 2 evaporator hoses above the glove box, one of which is NLA
    87 Zinno Cabrio 98k Barn Find. Build thread http://www.r3vlimited.com/board/showthread.php?t=268987
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    Cabrio deck lid & hinge struts (w sleeves) now for sale. See the link below for more info

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  4. #4
    Join Date
    Jul 2013
    Location
    CT
    Posts
    434
    My Cars
    1989 325i 4 Door 5sp
    Argh. So I put this off. Will address in 2019!


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