Well i have a 04 sierra with around 42k on it.. 5.3


Right now i have a catch can and it does catch a nice amount of oil, thats not my problem. My problem is thought the puff that comes out under WOT.

I noticed tonight with a buddy behind me that when i went wot it blew some smoke out that i could see in the mirror ( he said he couldnt see anything) but he did smell some oil he said..

my motor in stock form has the vent tube on the back of the motor that runs to the upper intake with no PCV..Open system

Now i have it running to a catch can.

Would it be worth trying to vent system with a breather instead and see if it cures it, also it would keep all oil out the intake since a catch can i know isnt going to get everything.

So if i were to do that would i then cap off the intake put a breather on the back of the motor then put a breather where the oil filler cap is.

Thanks for any advice!

 

Try switching to the LS6 valley cover with the built in catch can

 

dont really wanna switch i dont have to, from reading over on tech seems like mostly good results on deletion but wondering if any of the truck guys have done it/

 

all it is is nipple coming off the driver side valve cover with a hard tube then going to the middle of the upper intake..

nothing else besides that


I want to cap off the intake then add a breather on the driver and pass valve cover..

 

Well i ended up getting my MEtco breather, put that on and on the drive side valve cover put another breather then capped off the intake. ill see how it goes.