I just installed a Greddy oil catch can and my line from the pcv valve to the catch can seems to vacuum itself shut. To give you details.... I have an oversized line for the setup. I think there are 2 sizes available for the catch can setup and I got the larger of the 2 for a cheap price so I modded it to fit. There are no vacuum leaks and the line that goes from the catch can to the intake mani is fine. Any Ideas?

 

I checked the the valve and it seems fuctional. I'll get another one just incase. Any other ideas?

 

Im confused a bit, you are saying that there is a valve on the line going from the pcv valve to the catch can, and it is shutting. If this is the case then it sounds like u have the valve on backwards. PCV should blow out oil and crap in to the catch can.

 

You routed the PCV to the catch? I heard that was a no-no on N/A. I was told that I'd be pretty safe if I just used the EGR line.

 

I hear you there about the line shutting. But I'm positive its not on backwards....theres only one way it can go.

 

Are you serious? Why is that? I've never heard anything like that but it wouldnt be the first time.

 

I think Boe told me it screws up the idle. But my memory is kinda fuzzy of that e-conversation.