OMG, does anyone know the right way to use a PCV system?!
Call me if you want a step by step check of how you have it routed....sounds like you may not have it right, but it can take a while for rings to seat as well.
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On The Tree
Joined: Feb 2005
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From: Odessa, TX
So you guys really think that the catch can will fix this. At the rate he is going you can expect to use 7 quarts by 2k, far cry from 1qt in the same distance.
My factory motor was run like that.
My current setup with catch-can is run like this:
Valve cover to CAI
Valley cover to lower fitting on catch-can
Intake manifold to upper fitting on catch can
So far it has worked great.
If you are running fron valley cover AND valve cover, to catch can, you are not letting the crank case breath at all. You are pulling vacuum on both sides and have no breathing element in the system. That's what the line from the valve cover to CAI is....or you could plug the CAI port and put a filter breather on the valve cover.
My current setup with catch-can is run like this:
Valve cover to CAI
Valley cover to lower fitting on catch-can
Intake manifold to upper fitting on catch can
So far it has worked great.
If you are running fron valley cover AND valve cover, to catch can, you are not letting the crank case breath at all. You are pulling vacuum on both sides and have no breathing element in the system. That's what the line from the valve cover to CAI is....or you could plug the CAI port and put a filter breather on the valve cover.
Then you have no good flow through the system.....with a breather on the catch can you release the vacume before it cam evac the crankcase properly.
I do agree that a leakdown would be a good idea just to see if you have a sealing issue.....and where.
I do agree that a leakdown would be a good idea just to see if you have a sealing issue.....and where.
I run a catch can with no breather to the valley to intake. then put a breather on the valve cover. that be better? or do I need to eliminate the breather thing completely?
If your are going to use the breather, then Yes, put it on the valve cover. Run the hose from the valley to the loxer fitting on the catch can, and the hose from your intake to the upper fitting on your catch can. That's it.
Definately never said it was going to fix his burning oil. Routing the catch can correctly will fix his first question though.
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First things first, you HAVE to address that PCV issue. You have pressure routed to pressure the way it is and that will not alleviate the crankcase pressure at all. You need a vaccuum source ASAP to get the PCV working the way it needs to.
You also need to realize that if you have any blowby resulting from the lack of PCV and excessive crankcase pressure that it will inhibit proper seating of the rings, so there is no issue to address right now other than the PCV, and then getting more miles on it with a setup that may allow the rings so seat better
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That's a little uncalled for. We are not trying to give you the runaround by simply trying to help you do what needs to be done to get the rings to seat properly. Should it always take this long? Not necessarily, but there is no catch-all answer that we can give you at this point. This is simply something that does not happen often and there is not a simple answer as to what needs to be done without going through a few procedures to narrow down what is going on.
First things first, you HAVE to address that PCV issue. You have pressure routed to pressure the way it is and that will not alleviate the crankcase pressure at all. You need a vaccuum source ASAP to get the PCV working the way it needs to.
You also need to realize that if you have any blowby resulting from the lack of PCV and excessive crankcase pressure that it will inhibit proper seating of the rings, so there is no issue to address right now other than the PCV, and then getting more miles on it with a setup that may allow the rings so seat better
First things first, you HAVE to address that PCV issue. You have pressure routed to pressure the way it is and that will not alleviate the crankcase pressure at all. You need a vaccuum source ASAP to get the PCV working the way it needs to.
You also need to realize that if you have any blowby resulting from the lack of PCV and excessive crankcase pressure that it will inhibit proper seating of the rings, so there is no issue to address right now other than the PCV, and then getting more miles on it with a setup that may allow the rings so seat better
Did you happen to tell their tech that you were using a catch can? It sound to me like he either missunderstood you or you left that part out. The way he told you to run it, is the way a stock, from the factory, motor is routed...i.e. no catch can. If you run it the way we listed above, and drive it for a while, you should be golden.
Did you happen to tell their tech that you were using a catch can? It sound to me like he either missunderstood you or you left that part out. The way he told you to run it, is the way a stock, from the factory, motor is routed...i.e. no catch can. If you run it the way we listed above, and drive it for a while, you should be golden.
Once the PCV works right it should cut down on any blowby condition which that alone should help your oil consumption issue. Once the blowby condition is cleaned up some miles should help the rings seat properly. :thumbs:
You're on a good track and shouldn't get down about it, it's just minor issues that work together to ruin the experience of a enw engine, it's all going in the right direction with working out little things like PCV
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You beat me to it, I gotcha, I assumed by NOT that you just meant with the catch can in between. Good luck, and I think you'll find this will all get worked out and you'll be more than happy when it's said and done 
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I did try a fresh air tube, but on decel, that was pulling oil from teh valve cover into the air bridge. I have a filter on the valve cover. that should be enough.
