What's good catch can?

[Timothy1_17]

Use the stock hose your car came with from the check valve to the pcv valve

It's the feed line from the crankcase going into the OCC, which is too short.

Well, back in the day, before there was so much smog s**t on cars, I remember that I could pull the PCV valve out of the grommet it goes into on the valve cover (hose still attached, so it was pulling vacuum), and sometimes you could hear the valve "singing" as it vibrated at a high frequency, I suspect this is the way they work, to regulate the amount of air flow through it. It would stop when you plugged it back into the valve cover as it would encounter less flow. So perhaps with the OCC on, it is changing the flow dynamic in the crankcase just enough to get the valve to make noise.
If you have all the hoses nice and tight, and no other issues, it is probably fine.

That probably makes the most sense of what I've heard so far. Yep, no issues (yet) and it runs great, just that annoying little high pitched buzzing sound on and off.


Tried cutting the hose a little shorter, and using the stock clamp, but the SXTH hose is a little bigger than the stock hose so it wouldn't fit. Put it back together with the SXTH hoses & clamps, still making the noise. Not sure what else to do at this point. Stock setup for a quiet engine, or OCC that is noisy, but will keep it clean.

If I find anything new I will post it up here.

Thanks for everyone's help. I appreciate it.

 

[robz32]

Since the stock hose and stock setup is quite. It sounds like the hose diameter on the PCV side is too big, and even with the hose clamp on its still leaking, try replacing with a smaller diameter hose.

 

[Timothy1_17]

Since the stock hose and stock setup is quite. It sounds like the hose diameter on the PCV side is too big, and even with the hose clamp on its still leaking, try replacing with a smaller diameter hose.

I thought the same thing, but the new hoses work fine when I ran it straight from the crank case to the intake manifold, like the stock setup. I used the new hoses from SXTH and bypassed the OCC (including check valve) and there was no noise.

I also tried running it without the check valve (thanks Deviatedstandards), and the noise seemed to stop. I ran to Home Depot and bought a 3/8 brass barbed splicer, removed the check valve, replaced it with the adapter, connected the hoses with clamps and started the engine. I ran it for a good 5+ minutes and no noise. Video below. I switched it back to the check valve after...noise came right back.

Maybe it's a faulty check valve? Not enough air moving through it? I'm not sure. All I know is the noise stops with the OEM setup and with the check valve removed.

I've been in contact with SXTH Element this whole time and the dude who I've been talking with over there has been pretty cool. Hoping they'll send me a new check valve and hoses.

https://imgur.com/4JNTmZf

 

[Deviate]

They should send you new hoses and valve. Especially since you were able to correct it by bypassing parts they supplied with the kit. Faulty is faulty. And you have video.

Happy i was able to help

 

[Slow jams]

I thought the same thing, but the new hoses work fine when I ran it straight from the crank case to the intake manifold, like the stock setup. I used the new hoses from SXTH and bypassed the OCC (including check valve) and there was no noise.

I also tried running it without the check valve (thanks Deviatedstandards), and the noise seemed to stop. I ran to Home Depot and bought a 3/8 brass barbed splicer, removed the check valve, replaced it with the adapter, connected the hoses with clamps and started the engine. I ran it for a good 5+ minutes and no noise. Video below. I switched it back to the check valve after...noise came right back.

Maybe it's a faulty check valve? Not enough air moving through it? I'm not sure. All I know is the noise stops with the OEM setup and with the check valve removed.

I've been in contact with SXTH Element this whole time and the dude who I've been talking with over there has been pretty cool. Hoping they'll send me a new check valve and hoses.

https://imgur.com/4JNTmZf

Please keep everyone posted on how SXTH Element treats you I think they will do the right thing...

 

[Timothy1_17]

Mark, from the engineering department of SXTH Element, will be sending me a new check valve and hoses. He has been really cool with this whole process and their customer service has been a refreshing experience. Glad we resolved this issue without any problems. The OCC and materials seem to be really high quality and I was hoping to keep them on the vehicle.

...lets just hope this new valve works.

 

[Deviate]

Mark, from the engineering department of SXTH Element, will be sending me a new check valve and hoses. He has been really cool with this whole process and their customer service has been a refreshing experience. Glad we resolved this issue without any problems. The OCC and materials seem to be really high quality and I was hoping to keep them on the vehicle.

...less just hope this new valve works.

Nice...

 

[Timothy1_17]

Wanted to give an update on my SXTH OCC. I received that new valve and the same noise was still there. I contact Mark from SXTH Element and he was gonna send me a whole new unit then I return my faulty one. Once they got the materials back in stock, I was sent the kit, and I just installed the new can, hoses & hardware over the weekend. Same noise with the new system.

I'm at a loss at this point and I put the OEM hose from the crankcase to the intake manifold back on. The only thing I can think of is the hose that connects to the port of the crankcase may have too large of an ID. The stock hose that pushes on there has a smaller ID size and fits on it snugly, whereas the hose SXTH provided has a slightly larger ID and goes on pretty loose (easy to pull off). Maybe the 2021 Stingers changed something slightly? I dunno.

I think I'll ask for refund and return the two cans...which bums me out because they seems high quality and are catching oil. I've emptied the can about 2-3 times now and have poured out about a tsp worth each time.

The one good thing through the whole mess has been their customer service. Mark from SXTH Element has been great throughout this whole process. He's been quick to respond to emails, been kind and professionals, offers solutions to try and has sent me multiple parts for free.

I may be back doing research for a new OCC, as I want to keep my valves clean.

 

[Deviate]

Wanted to give an update on my SXTH OCC. I received that new valve and the same noise was still there. I contact Mark from SXTH Element and he was gonna send me a whole new unit then I return my faulty one. Once they got the materials back in stock, I was sent the kit, and I just installed the new can, hoses & hardware over the weekend. Same noise with the new system.

I'm at a loss at this point and I put the OEM hose from the crankcase to the intake manifold back on. The only thing I can think of is the hose that connects to the port of the crankcase may have too large of an ID. The stock hose that pushes on there has a smaller ID size and fits on it snugly, whereas the hose SXTH provided has a slightly larger ID and goes on pretty loose (easy to pull off). Maybe the 2021 Stingers changed something slightly? I dunno.

I think I'll ask for refund and return the two cans...which bums me out because they seems high quality and are catching oil. I've emptied the can about 2-3 times now and have poured out about a tsp worth each time.

The one good thing through the whole mess has been their customer service. Mark from SXTH Element has been great throughout this whole process. He's been quick to respond to emails, been kind and professionals, offers solutions to try and has sent me multiple parts for free.

I may be back doing research for a new OCC, as I want to keep my valves clean.

That sux bro. Hopefully you can get it all figured out. And didnt it go away when you pulled the check valve? Thats where i definitely would start if that was the case.

 

[Timothy1_17]

That sux bro. Hopefully you can get it all figured out. And didnt it go away when you pulled the check valve? Thats where i definitely would start if that was the case.

Yeah, I was bummed, but it is what it is. Yep, it went away when I removed the check valve back in March, and the customer service & engineering departments know about that as well. I'll try doing that with the new system for the heck of it.

I'm curious how many brands/systems use a check valve. From pictures, it looks like Mishimoto and the BMS do not.

 

[Deviate]

Admittedly not knowing enough about them, i guess is it necessary? Is my biggest question. Yes the OCC is but the valve? Im sure my logic is off but you religiously service the can nothing should technically backflow right?

 

[robz32]

Wanted to give an update on my SXTH OCC. I received that new valve and the same noise was still there. I contact Mark from SXTH Element and he was gonna send me a whole new unit then I return my faulty one. Once they got the materials back in stock, I was sent the kit, and I just installed the new can, hoses & hardware over the weekend. Same noise with the new system.

I'm at a loss at this point and I put the OEM hose from the crankcase to the intake manifold back on. The only thing I can think of is the hose that connects to the port of the crankcase may have too large of an ID. The stock hose that pushes on there has a smaller ID size and fits on it snugly, whereas the hose SXTH provided has a slightly larger ID and goes on pretty loose (easy to pull off). Maybe the 2021 Stingers changed something slightly? I dunno.

I think I'll ask for refund and return the two cans...which bums me out because they seems high quality and are catching oil. I've emptied the can about 2-3 times now and have poured out about a tsp worth each time.

The one good thing through the whole mess has been their customer service. Mark from SXTH Element has been great throughout this whole process. He's been quick to respond to emails, been kind and professionals, offers solutions to try and has sent me multiple parts for free.

I may be back doing research for a new OCC, as I want to keep my valves clean.

This is definitely a first and after reading the troubleshooting you and the guys from SXTH element have done thus far, I'm almost certain that the issue may not be related to the cans but rather the plenum or the PCV valve.

See, the addition of the check valve introduces a slight restriction in the vacuum going in to the OCC, the fact that the hissing goes away when the check valve is removed from the system supports this.

Now Im willing to bet that if you put the check valve on the system and spray some soapy water where the check valve is, you will not see any bubbling, indicating a leak. Also spraying soapy water on the rest of the rubber lines will also help determine if there is a vacuum leak on any of them.

I'm almost confident that if you spray the soapy water where the PCV valve is, and where the return port is for the PCV on the plenum, you may see some bubbling.

May be worth a shot and perhaps you will be able to keep your current cans and SXTH element may work something out with you.

Hope this helps.

 

[ChaneRZ]

http://www.kstinger.com/positive_crankcase_ventilation_pcv_valve-433.html

 

[Timothy1_17]

Admittedly not knowing enough about them, i guess is it necessary? Is my biggest question. Yes the OCC is but the valve? Im sure my logic is off but you religiously service the can nothing should technically backflow right?

He wrote me back and said the check valve is an over-engineered part and not really necessary, which I think most suspected/knew. And it's not like I'm leaving much oil in there or letting it fill up. I may play around with it more, or remove it completely and give it a go.

This is definitely a first and after reading the troubleshooting you and the guys from SXTH element have done thus far, I'm almost certain that the issue may not be related to the cans but rather the plenum or the PCV valve.

See, the addition of the check valve introduces a slight restriction in the vacuum going in to the OCC, the fact that the hissing goes away when the check valve is removed from the system supports this.

Now Im willing to bet that if you put the check valve on the system and spray some soapy water where the check valve is, you will not see any bubbling, indicating a leak. Also spraying soapy water on the rest of the rubber lines will also help determine if there is a vacuum leak on any of them.

I'm almost confident that if you spray the soapy water where the PCV valve is, and where the return port is for the PCV on the plenum, you may see some bubbling.

May be worth a shot and perhaps you will be able to keep your current cans and SXTH element may work something out with you.

Hope this helps.

I'm starting to wonder the same thing since they've sent me two separate cans, three different check valves, and multiple hoses. I hope nothing is wrong with my intake/PCV, especially since it's fine stock and runs great.

I did spray soapy water all over back in March and didn't see anything, but I will try again, maybe I missed it. I may also try incorporating my stock hose into the SXTH OCC system, if I can without ruining it, and see if that does anything.

This does help, thank you. I appreciate you taking the time.

http://www.kstinger.com/positive_crankcase_ventilation_pcv_valve-433.html

This for the 4 cylinder version I take it? Same concept though. Thanks for sharing, I'll may try that out if I see any bubbling from the soapy water.

 

[Timothy1_17]

Alright, I tried many things today, and the noise is still there, when the check valve is involved with the OCC.

Two things that don't cause any noise:
1. Running stock PCV hose, no OCC
2. Running the OCC without the check valve doesn't make any noise (unless I pinch the hose restricting airflow).

Everything else I tried caused the noise to come back. I have two OEM PCV hoses so I even tried a setup with one stock hose going into the PCV valve and the other into the intake.

I sprayed soapy water but did not see any bubbles.

I also removed the PCV valve and cleaning it with Throttle Body & Air Intake cleaner. When I removed the PCV valve to clean it, the spring inside was freely moving without any restriction, but should it be this loose? See video:

https://imgur.com/bak7aeN

 

[robz32]

I believe you have found your culprit.

The spring should not be loose at all. That spring is what keeps the gases from flowing back in to the valve cover when there is a differential in pressure (when you let go of the gas pedal)

 

[Timothy1_17]

That is what I figured and ordered a new PCV valve earlier this afternoon.

@Deviate, @robz32 & @ChaneRZ – Really appreciate all your help.

 

[Timothy1_17]

My new PCV valve from kiapartsnow.com was just delivered and the spring is just as loose as the one on my car now (video above). I guess they sent me a bad/broken part? I'll call my local dealership to see if they have one.

 

[Timothy1_17]

Quick follow-up...After doing very little research on a few different websites, it seems the PCV valve is supposed to be loose and rattle when removed from the engine and shaken. And if it does not rattle, it's clogged and needs replaced. Thoughts on this?

 

[Deviate]

Pull the check valve and call it a day...or order one from a different vendor. Thats if you are good with the OCC ya got. Somewhere in this forum, if i remember correctly, I had seen someone had picked up an aluminum one.