When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So do I just curl up in a ball and die because I broke this?
I capped off the intake side but I am pretty sure this won't help lol. I can't just put a breather filter on the braided end... what do? This sucks lol
Is this the PCV valve from the valve cover to the intake? If so you can get a new ACDelco hose and valve on RockAuto.
Yeah its the 1way valve on the intake tube. I did manage to find that hose on rockauto. looks totally different but I guess it works. Waiting for it now
To be able to drive without issues plug both ends, the line going into the head is the fresh air inlet post MAF so it will run like a vacuum leak. I wouldn't drive the car unless you have to with the fresh air plugged until you get the replacement part, you could likely get away with removing the entire line and replacing with a vacuum line without the check valve just don't get into high boost.
To be able to drive without issues plug both ends, the line going into the head is the fresh air inlet post MAF so it will run like a vacuum leak. I wouldn't drive the car unless you have to with the fresh air plugged until you get the replacement part, you could likely get away with removing the entire line and replacing with a vacuum line without the check valve just don't get into high boost.
Yeah that is what I was told to cap both ends. I am just not driving it until I fix it.
I don't think Rock Auto has the pcv part you are looking for? Well if you can't find a stock replacement, here is one may work for you. It is listed for other cars. But work the same. https://www.fram.com/parts-search/FV266
Use a thick wall rubber hose (emission/fuel etc.) connect to your intake with hose clamps/pinch clamps and the other end to your braided hose? If you can find a pcv with same OD that you can insert into the braided end like the stock one.
I'll take a picture of what the broken one looks like lol
No need to. Here is one installed.....backwards. I just went through this exact same thing and made my own like you. Blow through it and see what I mean.
No need to. Here is one installed.....backwards. I just went through this exact same thing and made my own like you. Blow through it and see what I mean.
Yeah that's backwards. Mine was installed other way lol
That seems the opposite of what it should be. Air should flow from the valve cover to the intake.
Originally Posted by exninja
There are two check valves: one is in the IM and the other is at the fresh air inlet. The one in the IM makes sure that there is no pressure into the crankcase during boost; the inlet valve makes sure that flow is only going from intake to crankcase. I'd check the inlet valve before ripping apart the IM.
Sounds like GM set it up to pull fresh air in here and then the I/M connection pulls the air out of the crankcase. Weird setup.
Last edited by USMCFieldMP; Apr 4, 2022 at 04:42 PM.
That seems the opposite of what it should be. Air should flow from the valve cover to the intake.
I know the LNF pcv is bonkers but this is 100% factory stock car and that's how mine was installed. I think this hose is the inlet part of pcv and the outlet is elsewhere.
Normally, I'd say GM knows better than us... but the fact that they screwed up the LSJ system so bad makes me believe otherwise.
LNF's don't seem to have nearly as many PCV related problems when compared with LSJ's though. Pulling in fresh air might be them trying to mitigate some of the downsides of direct injection though.
Normally, I'd say GM knows better than us... but the fact that they screwed up the LSJ system so bad makes me believe otherwise.
LNF's don't seem to have nearly as many PCV related problems when compared with LSJ's though. Pulling in fresh air might be them trying to mitigate some of the downsides of direct injection though.
Yeah there was a classmate of mine at tech school had an LSJ car he got tuned and he blew his dipstick tube out lmfao
