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Thread: How to Find A/C Leak

  1. #1

    How to Find A/C Leak

    All sorts of exotic theories have been posted to find an A/C system leak, but it's really quite simple:

    Pressurize the system with an ordinary air compressor through one of the service ports, using a service hose with suitable air compressor fitting added:

    R134AirCompressorHose.jpg

    Spray down every possible leakage point with soapy water, then look for bubbles like this:

    SoapBubblesLeak.jpg

    Works to find leaky tires too.

    Bill Robertson
    #5939
    Last edited by Greasy DeLorean Mechanic; 09-10-2013 at 02:42 PM.

  2. #2
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    Use dye and a black light, easier and more efficient.

  3. #3
    Uncensored Hypocrite stevedmc's Avatar
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    Soapy water worked for me. Actually, I was too lazy to mix soapy water up so I just used windex.
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