Camaro 3.6 oil near MAF sensor

[GenesisCoupe]

Hello guys, 2012 chevy camaro LFX engine 3.6 liters.

Did you have an issue with oil drops near MAF sensor ? Please look to the image, I marked the tube where oil comes from. On the engine side where this tube is connected I can see traces of the oil...

As I know it called as PCV valve. So, should I replace it?

Oil consumption is 10 ounces (300 gramms) for 3.000 miles.

[GenesisCoupe]

PS. It is not the PCV line and no valve in that place in engine. PCV on the right side and clean. No ideas...

[ariZona28]

Oil in this area (aka the clean side) is normal. Amount varies with mileage of vehicle and style of driving. Do some research on catch cans as they can reduce the amount of oil that gets into the intake. Many threads in this forum on this subject. I have a Radium unit installed on the "dirty" side.

[Tajefe Couple]

I got a clean side separator and a catch can for mine, oil problem solved. Plenty of threads on here about it. Here is a thread to get you started check out post #21 about the CSS.
https://www.camaro5.com/forums/showt...=411415&page=2
Still would recommend an Elite catch can as well, much needed mod on these direct injection engines to stop oil ingestion.

Oh yeah and would also google how to enlarge the top and bottom holes for the PCV orifice on the passenger rear side, or I think GM put in larger ones starting in 2014 maybe. They have a high probability of getting clogged if not enlarged and should at least be checked. Plenty of discussion in the below thread but think I did mine 7/64" the top single, and 5/64" bottom 2 holes.
https://www.camaro5.com/forums/showthread.php?t=258202

[Tajefe Couple]

Here is mine circled in green is the CSS and Catch can.

[GenesisCoupe]

Thank you very much for replies. So, if it's normal I shall do nothing Just one question. Maybe I can disconnect this tube from the intake and let the oil drop under the car? Please advise what you think about it.

[Tajefe Couple]

Originally Posted by GenesisCoupe

Thank you very much for replies. So, if it's normal I shall do nothing Just one question. Maybe I can disconnect this tube from the intake and let the oil drop under the car? Please advise what you think about it.

Not a good idea, that tube is necessary for your crankcase to vent and could cause oil to end up everywhere. Including on hot parts of the vehicle and perhaps be a fire hazard or just make a nice mess of things.
I would highly recommend a clean side separator and a catch can. The separator oil cap still allows the crankcase to vent but the oil is returned back in to the valve cover instead of being sucked into the intake. Both help prevent your valves from caking with carbon build up and dramatically effect performance and engine life.

[GenesisCoupe]

Originally Posted by Tajefe Couple

Not a good idea, that tube is necessary for your crankcase to vent and could cause oil to end up everywhere. Including on hot parts of the vehicle and perhaps be a fire hazard or just make a nice mess of things.
I would highly recommend a clean side separator and a catch can. The separator oil cap still allows the crankcase to vent but the oil is returned back in to the valve cover instead of being sucked into the intake. Both help prevent your valves from caking with carbon build up and dramatically effect performance and engine life.

Thank you sir. Is there any ready to use kits ? I looked at ebay, found nothing.

P.S. My engine specialist as an option would completely turn this system off.

['10CamaroDude]

OIL at the clean air side means your crank case pressure it too high at higher RPMs,
so it's being pushed out that side, as well as being pulled through the PCV side.

Update your PCV Valve! https://youtu.be/yL0DIBV1hck
The 2013s and up have the new PCV with the larger holes.

Ideally, air is supposed to pull through the clean side, and vent on the PCV side,
pulled through by vacuum at the intake. That is where the PCV line
goes to. At higher RPMs, there is not enough pull through the PCV, so it
starts to vent out the clean side as well, thus you will get oil at the
intake there, on the clean side. I did, till I updated the PCV, which also
stopped the front corner valve cover leaks.

Originally Posted by Tajefe Couple

Not a good idea, that tube is necessary for your crankcase to vent and could cause oil to end up everywhere. Including on hot parts of the vehicle and perhaps be a fire hazard or just make a nice mess of things.
I would highly recommend a clean side separator and a catch can. The separator oil cap still allows the crankcase to vent but the oil is returned back in to the valve cover instead of being sucked into the intake. Both help prevent your valves from caking with carbon build up and dramatically effect performance and engine life.

That is partially incorrect, clean air side. You can put a breather filter
right on the clean side. That side is to pull clean air from the intake
tube, to circulate through the crank case, and out the PCV side. A
breather filter would do the same thing. It would also become a vent if
pressure in the crank case gets too high. Plenty people have done it
with no issues! The PCV valve must be updated though, on LLT motors,

You can install a catch can on the CLEAN side as well as the PCV side.

Also, on the factory intake, the clear side hose isn't anywhere near the MAF
sensor...

[Tajefe Couple]

True you can put a breather cap on the clean side, just know for sure if it does or doesn't have a check valve. People have been known to have issues just trying this route!
Some switched to the 1LE OEM separator as well. I prefer to run a clean side separator from Elite and call it a day.
http://www.eliteengineeringusa.com/c...%20is%20lifted.

You can also do what CamaroDude said and run a catch can on both sides but tends to not be necessary. As mentioned I run an Elite in the most common location on the dirty side. There are tons of catch cans out there just pick a good one.

Again getting a new or drilling your orifice for the PCV system is a big deal as they plug up and cause oil leaks when they can't vent like Dude reiterated.

Genesis is new here and just looking for help so hopefully Dude and I don't confuse them and just help with a solution as that's what this forum is all about! Keep asking Genesis and I'm sure we will all chime in with our solutions, please just draw from that and do your research on all ideas.

[GenesisCoupe]

So, as I understand the principle of the engine. There should be no gases in the crankcase if the engine is working properly. This PCV valve is installed to remove gases from the crankcase that should not be there. If there is oil in the intake it is suggested to widen the holes on the PCV valve. Don't you think this is deceiving yourself? In my opinion, there should not be any gases in the crankcase at any speed. I think the best way out is to replace a set of piston rings. Please advice

[GenesisCoupe]

Originally Posted by '10CamaroDude

OIL at the clean air side means your crank case pressure it too high at higher RPMs,
so it's being pushed out that side, as well as being pulled through the PCV side.

Update your PCV Valve! https://youtu.be/yL0DIBV1hck
The 2013s and up have the new PCV with the larger holes.
.

Updated. Does the engine have an oil separator from the factory in PCV line ? If yes, what is the location ? I would clean or replace it.