Catch can hissing normal?

[jyi786]

I just installed a UPR catch can in my 2019 Escalade ESV. It hisses, but only on application of throttle. At idle it's silent. Also, it's installed correctly, as I JUST installed it, went for a 40 mile drive, checked it, and there is already like 1ML dirty oil in the can.

Are catch cans hissing normal?

 

[Scarey]

It’s a common complaint. I had a j&l, I think they did a name change, and they allude to that in one of their videos.

 

[RST Dana]

My k&n did this as well.

 

[Joseph Garcia]

Interesting. I don't believe that my JLT (now called J&L) catch can makes a hiss, but my truck is loud anyway, so I may simply not be hearing it.

I log my oil catch can capture every time that I empty the catch can, and I average about 1 fl. oz. per 1000 miles.

 

[fauxlty]

I saw this on Lonestar Hawaiian’s YouTube channel:

 

[jyi786]

I saw this on Lonestar Hawaiian’s YouTube channel:

Yep, I watched that video first. My issue is not the same. I have no hissing at idle, only at light throttle. It sounds like a dry bearing. Manipulating the hoses makes no difference.

I was also able to mitigate the noise ever so slightly by tightening the can (the bottom part) more.

With the amount of oil it's pulling, I'm just going to live with it until I can get a pair of longer hoses and a bracket to mount it somewhere near the aux battery area.

 

[2017sltXL]

I just installed a UPR catch can in my 2019 Escalade ESV. It hisses, but only on application of throttle. At idle it's silent. Also, it's installed correctly, as I JUST installed it, went for a 40 mile drive, checked it, and there is already like 1ML dirty oil in the can.

Are catch cans hissing normal?

I installed a UPR on my 2017 Yukon XL(L83) about a month ago after doing my delete and cam. I noticed a similar noise on hard accel as well, it almost reminds me of a very faint ex manifold gasket leaking. Not sure if that is caused by the separator device in the top of the assembly or what, but the fit and finish was great. I've got around 1000 miles on it now and it's just to the level where it will drain out the bottom valve, so it's doing something.