Better fitting for OCC?

[DubC]

So last year I replaced some pieces of the OCC system I have (JBR). Replaced the lines and the petcock fitting. I hated it. Was always hard to open and never sure if it was tight enough. Was also starting to rust. So I tried to duplicate what the newer kits have.

Thing is, changes oil today and when I took the pan off there was a lot of oil under where the can is. The only part that looked dirty was the tip. When I opened the valve nothing came out. It’s been well over a week since I’d driven it so maybe other sections leak but dried? Maybe I didn’t have it on tight enough?

Could oil and air really blow by that twist knob? It was in the proper position when I got the pan off. And it takes quite a bit of twisting to start seeing the gap.

Full close:

Partially open:

It didn’t generate a vac leak apparently. Or not one that kicked a CEL. I don’t have anything on my main tune screen to monitor it. Never thought of it.

Anyone have an idear? Maybe that’s a shit setup. I dunno. I reinstalled and tightened it more than it was initially. Maybe that’s the ticket. How worried should I be?

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[Polish_Eagle]

I have a ball valve on my catch cans too (got 2 cans) and they never leak like that. I would be quite suspicious about the seal in the ball valve failing from oil/gas deteriorating it or just a poor valve design. You can check if the valve is failing to seal fully by taking it off and blowing air (low pressure) via a compressor to see if the seal is holding. You could also use a vacuum hand pump brake bleeder on the plastic nipple with the valve out and closed to see if the valve allows you to hold vacuum.

One other thing too. When you close the valve, does it feel like it clicks in place and feels sturdy? Another possible problem could be vibrations from the car are causing the valve to open. If vibrations are opening it, drill a small hole through the plastic handle and run some wire through it and twist the other end of the wire around the fitting to hold it closed.

 

[DubC]

started the car today and even when closed there is a tiny pull of vac. so likely it's just not sealing. too bad i didn't check that initially. der. hopefully no harm done. i'm likely just going to replace the valve with a plug and just take it out to let it drain every change (which is likely to be once/year). that way i know it's sealed. cheaper than buying a brand new OCC just for the valve. thanks for the suggestion!