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A/C Leak Question

 
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Old 05 May 2018, 09:09 pm
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Default A/C Leak Question

Hi All,

The A/C sprung a big leak, is completely empty, and won't hold pressure. Its been that way since last summer and I need to get on it. But the point of leakage isn't obvious. Any tips on how to track a big one down?

I was thinking compressed air. If I can figure out how to hook it up.
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Old 06 May 2018, 06:06 pm
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Default Re: A/C Leak Question

give it a small charge, add dye. No better way
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Old 06 May 2018, 07:00 pm
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Default Re: A/C Leak Question

Back in the day we used a halon leak detector. It's basically a black box you turn on, with a wand, and it sounds like a geiger counter. You wave it around various hoses and pipes. When the ticks get fast, you know you found your leak. I no longer have one, it went with all my dad's tools I was supposed to inherit when he passed but my cousins raided the toolboxes ...
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Old 06 May 2018, 08:43 pm
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Default Re: A/C Leak Question

Quote:
Originally Posted by ajhockey3 View Post
give it a small charge, add dye. No better way
Yeah, tried that. It doesn't hold any pressure. And I couldn't find any dye.
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Old 06 May 2018, 08:44 pm
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Default Re: A/C Leak Question

Quote:
Originally Posted by aelfwyne View Post
Back in the day we used a halon leak detector. It's basically a black box you turn on, with a wand, and it sounds like a geiger counter. You wave it around various hoses and pipes. When the ticks get fast, you know you found your leak. I no longer have one, it went with all my dad's tools I was supposed to inherit when he passed but my cousins raided the toolboxes ...
I was hoping for a simpler method. Money is tight, time I got.
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Old 06 May 2018, 09:19 pm
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Default Re: A/C Leak Question

Quote:
Originally Posted by GotToGo View Post
Hi All,

The A/C sprung a big leak, is completely empty, and won't hold pressure. Its been that way since last summer and I need to get on it. But the point of leakage isn't obvious. Any tips on how to track a big one down?

I was thinking compressed air. If I can figure out how to hook it up.
You need a fitting like this:




Hook the other end of the blue hose to your compressor hose with an improvised connector and a couple of hose clamps.
If it blows enough air through you can use the soapy water bubble test to look for leaks.
Only 2 drawbacks to this method:
1- It is going to take a pretty big compressor to keep the air flowing at a great enough rate to detect anything
2- It might be difficult to get the soapy water on every single part of the system. Using a spray bottle might help.

Good luck and let us know how you solve the problem.
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Old 06 May 2018, 09:33 pm
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Default Re: A/C Leak Question

Well, that's what I was thinking. Guess I'll hunt up a fitting and give it a go.

Thanks!
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