Quote:
Originally Posted by ROLLGUY
When the system is pressure tested with 250 psi of nitrogen and sprayed with soap, many have leaked. They also leak at the crimped end often. Yes I agree that the hose used in these cars is very good quality, but they still have leaks, and often in my experience. "I did not and would not use the rotten looking hose, even though it tested good." I am the same way. I don't want to gamble on a 30+ year old hose even if it looks good. With the cost of refrigerant, labor, and time, it is just not worth doing the job twice.
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I do not see how you can spray soapy waters onto every square inch of a hose and be able to see every square inch of it while looking for bubbles. I tried it and it plainly does not work well. That's when I went with testing the hose submerged in water, and to my surprise, none of my hoses leaked.
Regarding ""I did not and would not use the rotten looking hose, even though it tested good.", I should add that's because I had better looking hoses. If I didn't, I would have used the rotten looking hose since it tested good because the part that is rotten is just on the outer abrasion layer.