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  #37  
Old 04-21-2014, 11:09 AM
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Re: PCV line / Oil Catch can

Any update on pics of the Provent install?
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  #38  
Old 04-22-2014, 05:06 AM
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I am getting the parts together ready to mount mine. Going to attempt to mount it to the air con line. If I succeed will advise asap.
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  #39  
Old 04-27-2014, 08:40 AM
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Re: PCV line / Oil Catch can

It's hard to take a pic as its a pretty tight space but:







It's kind of a convoluted hose routing going from 1", down to 5/8th's and making a 90 deg turn. Then the lower hose is 1" converted to 7/8th's. And I have a 1/2" drain line connected to a valve at the bottom to drain the oil when it fills.

Something is wrong with my lines or the catch can itself as I jeep getting a PCV CEL. May have to re-do the lines.
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  #40  
Old 04-27-2014, 09:11 AM
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Re: PCV line / Oil Catch can

Thanks for posting these.

It's unfortunate to hear about the CELs. My first thought was that perhaps your ProVent is fake (as fakes are known to cause issues), but on closer inspection the unit appears to be genuine. Hopefully the issue is something trivial.
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  #41  
Old 04-27-2014, 09:28 AM
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Re: PCV line / Oil Catch can

Ya, I checked out the "how do you tell if you have a real Provent" threads and mine was good to go. I think just maybe the multitude of connections I have there is a leak somewhere. Curious to know how the car senses a PCV problem, pressure?

I may re-design the hose setup and try and get better coupler's/reducers..
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  #42  
Old 04-27-2014, 10:01 AM
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Re: PCV line / Oil Catch can

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Originally Posted by Zybane View Post
Curious to know how the car senses a PCV problem, pressure?
Pressure seems likely, because the line is putatively at higher pressure than ambient (other candidates such as temperature and O2 content wouldn't be altered via a pressurized hose leak). Pressure is going to be lower at the intake with the can installed, that's basic fluid dynamics. However, given the size/design of the ProVent, the pressure drop seems like it would be minimal.

If there is enough slack in your hoses, you could temporarily take the ProVent out of the PCV circuit (leaving it mounted in the compartment) and check the existing hose run by connecting it together without the ProVent to see if it still throws codes. If the problem persists, that suggests a hose problem. If it doesn't...
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  #43  
Old 04-27-2014, 10:29 AM
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Re: PCV line / Oil Catch can

Hm, true. I could try and find a 1" U-type connector. Another thing is it doesn't trip the PCV CEL right away, only after like 4 drives.
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Old 04-27-2014, 10:36 AM
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Re: PCV line / Oil Catch can

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Originally Posted by Zybane View Post
Another thing is it doesn't trip the PCV CEL right away, only after like 4 drives.
Would this be one of those "pending OBD II codes"? Can your OBD scanner read those, if so? If it's pending, you might get the information immediately even though the fault isn't thrown for another few drives.
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Old 05-11-2014, 01:49 AM
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Re: PCV line / Oil Catch can

Read a report somewhere that if lines where to small would partially pressurise sump and give a code don't know if that is it but thought it could help best of luck
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  #46  
Old 05-14-2014, 10:18 PM
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Re: PCV line / Oil Catch can

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Originally Posted by peko630 View Post
Read a report somewhere that if lines where to small would partially pressurise sump and give a code don't know if that is it but thought it could help best of luck
If it is indeed an overall pressure drop issue then it may be possible to compensate with larger lines (rough estimate of pressure drop is an inverse 4th power function of line radius). Reducing the number of size changing couplers would also help to decrease the pressure drop.

But then again, perhaps the example setup is fine and there was just a leak in a hose or coupling.
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  #47  
Old 05-19-2014, 07:33 PM
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Re: PCV line / Oil Catch can

Zybane, just wondering about the latest on your catch can as I'm thinking about fitting one too.
Did you solve your error message problem?
Is it catching much oil?

Thanks in advance.
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  #48  
Old 05-22-2014, 09:25 PM
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Re: PCV line / Oil Catch can

Well this is a real head-scratcher. I left the engine running and used spray-bubble soap on all the lines to check for any leaks. None. Then opened up the top of the Pro-Vent and clearly there was tons of fumes/exhaust coming from the PCV system. Put the top back on, disconnected the hose that leads into the intake with associated sensor. Visible exhaust coming out of that (less white as obviously going through filter. So mechanically, everything is working as advertised.

Not sure why I constantly get this PCV disconnected CEL. Does anyone know what exactly that sensor is measuring on the intake tube that the PCV exhaust goes through? There is a chap down in the export forum in Australia that has the Pro-Vent with his diesel and doesn't get a CEL. Then again, they have different emissions systems on their diesels. So strange this issue...
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