Did smog check(CA), everything passed except pcv. I do not have the stock parts, but I re routed it back to the intake elbow and it’s smoking like crazy out of the tail pipe. Am I missing something?
Failed visual test
- Thread starter JAG91761
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Thank You 2004LB7 will look into that I assume it does not when I bought the truck it had the PCV reroute.
Actually, that is nothing but a tube with a Y connection. The "Positive" part of the system is a little diaphragm on each valve cover that has a small spring and rubber valve built in. I ripped out the rubber and the spring when I rerouted mine. If the same mod was done to yours, the vacuum from the intake will suck oil into the intake.
This is the diaphragm I mentioned. Looks like you can get replacements. https://dansdieselperformance.com/i-30502205-pcv-valve-kit-lb7-lly-2001-2005-duramax.html
You lazy bastard!!!For some reason I was thinking they changed it on the LLY to that part. I have an LLY and didn't even look
You'll need to remove the plate to know for sure. The rubber flange and spring are the important parts here.
Thanks Lennydmaxguy do you know if I can remove the plate with out removing the valvecovers? I order the parts, do you know if goes gasket spring then cover?
Yes, the plate comes off with the 4 Phillips screws. The picture 2004LB7 attached above shows correct install order. The spring fits into an opening in the valve cover, and the rubber diaphragm goes on top.