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  #13  
Old 06-16-2010, 01:29 PM
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Re: Installing an oil catch can

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Originally Posted by suzieque View Post
it filters out the oil from the oil vapour coming out of the pcv valve. that way only air goes into the intake manifold. the oil would normally end up in your intake manifold and make a mess of the intake and valves.
mmm, sludge.
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  #14  
Old 06-16-2010, 02:19 PM
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Re: Installing an oil catch can

So again am I missing something? Do they make ones for my Jeep? I don't want to ghetto rig one, rather just buy a nice one for it...
Can someone link me to a universal one that will work?
99 WJ 4.0L
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  #15  
Old 06-16-2010, 02:29 PM
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Re: Installing an oil catch can

There's loads of universal ones on ebay. This is the one I'm looking at, mostly cause I think it looks cool

http://cgi.ebay.co.uk/Stainless-Stee...item3ef1a90334

Plan to buy it in a couple of weeks. It seems that in general, cans are not made for any specific vehicle. It's more down to what one will fit in your engine bay. I've got an XJ with a 4.0 I6 in it. When I buy the can I'll install it in that and let you know if there's any probs.
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  #16  
Old 06-16-2010, 04:21 PM
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Re: Installing an oil catch can

Looking into the WJ service manual i see the PCV valve, but also 2 PCV breathers on top of the cylinder head covers. The 2 breathers are connected to the inlet on the air resonator box, but i don't see the connection with the PCV valve hose. (it probably is there, i only don't see it). So if you want to catch all oil vapors, the catch can should be close to the air resonator box inlet, right?
What is in fact the function of the PCV valve, when the breathers are connected directly to the resonator box?
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  #17  
Old 06-17-2010, 07:52 AM
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Re: Installing an oil catch can

You got me there dude! I've never noticed the breathers on the cylinder head cover, mind you I've never looked for them. From memory, the valve hose does seem to disappear towards the firewall.
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  #18  
Old 06-17-2010, 04:20 PM
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Re: Installing an oil catch can

Just had a look to the hose going from the PCV valve towards the firewall and with an inspection mirror i saw the hose going into the inlet plenum, below the throttle body. The 2 breathers on top of the valve covers go jointly to the resonator box and cause the throttle body oil contamination. Anyone knows what is the reason of this setup and how it works Why is there the PCV valve on 1 side and apparently no valve at all on the side of the breathers on top of the valve covers
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  #19  
Old 03-13-2011, 02:21 PM
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Re: Installing an oil catch can

Has anyone put a catch can on a 01 Jeep Grand Cherokee 4.7 how do u install it anybody have step by step installation with pics would be perfect
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  #20  
Old 03-13-2011, 04:07 PM
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Re: Installing an oil catch can

so can this be done to my 2007 jeep grand cherokee
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  #21  
Old 03-16-2011, 02:13 PM
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Re: Installing an oil catch can

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Originally Posted by suzieque View Post
on my 2001 5.9L durango, I installed a FRAM clear plastic fuel filter as a "catch can", the G2 model I think. Its cheap ($5?), disposable and you can see when its time to replace it and no special mounting required, just install it in the line after the PCV fitting, takes about 15 minutes for first time install, 5 minutes after that to replace the filter once a year and looks completely stock.

I used this setup for years without any problems.
I did the same to my 04 GCL 6 cyl. with a Fram filter. After 2k there is no more than 6 drops of oil in the filter. How much oil did you collect in the filter and how many miles?
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