Pcv fix

[Killo100]

Hey guys I've been hearing a lot about the pcv system and how it charges into the turbo inlet and causes a lot of black gunk build up. Can anyone give me tips on the best way to fix this? I've seen multiple ways like using a catch can but I'm not sure what the best method is.



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[Blue Moon Sonic]

I just did this over the weekend. It works really well. Best to do it before the orange check valve in the intake manifold fails, but can be done after too. If you are pulling the manifold off, Go ahead and port it and tune the car as well. You'll notice it doesn't fall on its face as hard in the high RPM range.

2011-2016 Cruze/Sonic/Trax 1.4L Turbo Intake Manifold PCV Check Valve Fix

 

[RMinNJ]

What does one do with the external old hard hose that was going to the orange check valve ?
Just plug it somehow? Sorry have not looked at where it goes in sometime.

 

[Maddmatts]

What does one do with the external old hard hose that was going to the orange check valve ?
Just plug it somehow? Sorry have not looked at where it goes in sometime.

The hard line connects to a 2nd check valve right at the turbo's compressor inlet. This tube is meant to vent the crankcase when the intake manifold is under positive pressure (orange check valve is closed).

Under normal circumstances, this hose should only experience vacuum to ambient pressure.

 

[SoCalRs]

ca, car pcv fix with throttle spacer pass smog visual ???

Has any one done this fix that lives in a smog state like Ca, I seen the thread I have a 13 RS and I noticed at high boost I hear a hiss like air is escaping somewhere I got under the car and it kinda looked like the oil pan was starting to leak ,I have only 24k miles on the car but I am interested in doing the fix with the throttle spacer since it's easier to service I have a trifecta turbo advantage tune since that's all I can get away with here , although if I do the Other mod and take off the intake I would probably port it at the same time . He said 40 to 50k without needing to service the valve I'm just wondering if I would fail the visual with the spacer installed ????