Refrigerant Leak?

[239]

I noticed over the years that this part of the AC hose is covered in what looks like oil. It’s gotten worse and the AC feels warmer. Has anyone had a leak in that area before? I’m wondering how common it is. I see the replacement on rock auto for $50 but I’d like to get an opinion before I order it.

 

[C420sailor]

Clean fitting. Start truck, turn AC on. Soapy water.

The last thing I would ever do is replace an AC component without being absolutely sure it is the leaky component.

 

[Mr. Alligator]

x 2

 

[239]

Good suggestion. I have a UV light to detect leaks so I’ll probably get the ac dye as well.

 

[Pete Deering]

Good suggestion. I have a UV light to detect leaks so I’ll probably get the ac dye as well.

I would go the dye route. but try The soap first and clean the fitting.

 

[1998Exp]

Whether this "sweating" is a refrigerant leak or not, an almost certain sign of low charge is very fast cycling (a couple seconds on/ couple seconds off).

 

[rasouth]

I just went through this process of finding a leak. I tried the UV dye and then the leak detector but soapy water worked best. It was coming from the evaporator, a place that the UV dye and leak detector could not find.
As with everybody else, find the leak first.