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What did you do with your GMT400 today...or yesterday....

My 95 leaks from both areas and doesn’t have a proven on it. It’s not much but residue is there. I think you mentioned that you’re using the real provent filter rather than the stainless mesh that came with the cko provent? I would check flow though by blowing by mouth into the side from the valve cover and see if air is moving freely though the filter and provent housing. Does your provent have a check valve in the bottom where the lower hose connects? Mine didn’t but the real provent is supposed to have one.
This is creating a patch of oil everytime I stop and these leaks were not there before I installed the CKO Provent.


IMG_7541.jpeg
 
Is it still hooked to the intake, to keep the vacuum in . The crankcase?

Maybe without the suction. You're having more leakage.

One of the reasons I never pursued a provent.
It goes through the catch can and then into the boot before the turbo. I can quickly swap the CDR back in and see if the leakage stops.
 
A friend has one of these in his wehicle. I so much would like one of these units after seeing the one he has and how it functions.
Seems they are for now NLA.
Has the CD/DVD slot too.

 
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