ls engine oil in intake manifold

this is a common failure on the newer Chevrolet motors due to usually a defective valve cover that Chevrolet has an updated one to fix this problem

[@jscustomrides9102]

I always run a catch cam on all my ls swaps

[@Mr73cheyenne]

If you have this issue and your on a tight budget take your defective valve cover off. Use small drill bit and drill holes into the baffle on the bottom side of the valve cover where the pcv goes in. I did it to my 05 silverado and it stopped smoking instantly. It's been 2 years and hasn't smoked since

[@NOMAD3030]

I heard that this is normal on port injected intakes because the plenum sits below the runners.

[@hill_customs6807]

I don know about that.. i do know a bad design in valve cover pcv system is what causes this..

[@peacauve]

Heck yeah

[@brandonbullins]

I despise a plastic intake. I dont know why they thought that was a good idea...

[@Popcorx]

I'd take the plastic ones over my cast iron ones

[@brandonbullins]

@@Popcorx I've changed blown out plastic intakes over 100 times. Never had to replace a cast, aluminum, or stainless.

[@Popcorx]

@@brandonbullinstrue

[@Dannymclovin]

Did you find a solution? I have on 02 sierra and it was burning oil like crazy took the intake manifold off and just cracked the throttle and all that oil started to come out

[@hill_customs6807]

Yes. Bad valve cover/Pcv

[@nickmartin7024]

Was it smoking out the tailpipe if you rev the engine ?

[@hill_customs6807]

Only after it was parked on a hill allowing the oil to leak back into the cylinders

[@HondaMom]

How are you going to get the oil out?

[@hill_customs6807]

We suck it out with a shop vac.. then wipe it down with a rag. You can fit your hand inside.

[@kellysahy2850]

@@hill_customs6807 you must have small hands lol. I’m cleaning mine now and had to wrap a rag around a long screwdriver to get back in there

[@hill_customs6807]

You don't have to put your hand inside. Use a shop vac. Or take the intake off and dump it out. And it doesn't have to be squeaky clean. Just get the large pool sucked out.

[@josephbowman87]

Pcv "pressure control valve"

[@hill_customs6807]

Umm.. pcv stands for positive crankcase ventilation..

[@josephdurish2315]

LS engine ?

[@hill_customs6807]

Yes 2008 5.3

[@josephdurish2315]

@@hill_customs6807 that's crazy tho, never seen it before. Comm problem with the LS ?

[@hill_customs6807]

@@josephdurish2315 just mostly with the 2007+ truck motors.. its the valve cover.. its all over RUclips