2003 Infiniti G35 Intake Plenum Cleaning, PCV Oil Catch Can Install 

Thank you for being so thorough and with explaining this video!. I was looking hrs on the forms to get info on the driver side intake vent on the valve cover!

Great video boss! Very informative, thanks spread this important info! A lot of vq veterans don’t know this stuff!

I went ahead and found a baffled oil catch can that has two inlets and one outlet. So it has 3 adapters on it. I installed a pcv delete and have that going to one inlet. Then have the driver's side valve cover outlet going to an inlet to the OCC. Then put a small breather filter on the outlet of the OCC. So the system is now being vented to atmosphere through the OCC. It's not a closed system, since it's being vented. The baffles in the OCC should prevent any excessive oil vapors from being spewed in the engine bay. I plugged the inlet to the intake tube as well as the one that goes to the lower plenum. I was worked that I might have excessive pressure in the crankcase at first. But I'm not running any forced induction so I should be fine. There really isnt too much pressure in the crankcase anyways. I didn't really have too much oil residue in the first place. I'm pretty positive that it was 16yrs of buildup and considering that it was in fair condition. When I looked down into the intake manifold, the valves looked to be in good condition as well. I installed new valve covers and the old ones were gunked up where the pcv valve was. I changed the spark plugs as well and only had one that had small traces of oil on the threads. The spark plug seals were pretty worn though. The plugs were pretty worn and I had 3 coil packs completely fall apart when I took them out. I did have one connector crack on me that went to a fuel injector. I went ahead and super glued it back together. It connected back on fine, so hopefully I won't have any issues. I'm waiting for the rtv to cure on the valve covers and the plenum spacer I also installed too. Only thing I'm a little concerned about is the intake manifold gasket. It's odd because I don't recall ever taking off the two outside bolts that bolt the lower plenum to the upper intake manifold. It the lower plenum diagram they are bolts 7&8. I had the 6 middle bolts and the gasket didn't block their access to the holes onto the intake manifold. But for some reason the gasket blocks the holes for the two outside bolts. I know for a fact if I removed those bolts they would of been with the 6 middle ones. So it's been bothering me because I can't recall weather I removed them or not. I'm inclined to think that they were never there In the first place. Hopefully I won't have any issues with a leak. Keeping my fingers crossed, I torqued everything down pretty good. I also used thread lock and rtv on the manifold gasket. Guess I'll find out tomorrow once the rtv cures and I can finally start up my car.

My car is throwing oil into the plenum through the PCV and the Deiver side Valve Cover as well. Any advice on a catchcan for the two lines? My TB man, was dirty of oil residue and the interior was a little bit worst than yours.

I’ve heard on the forums a vented catch can is the way to go. What oil catch can are you running?

How was this video good? What did you clean the plenum with? (Liquid) did you use a cleaner. You just showed you cleaned it. How with what?

Good video ! got a question Got a 2001 Nissan skyline VQ (g35) and I having issues with EGR I am planning to remove the cover to clean that up How difficult was it and what are the torque specs ? Help is appreciated Thank you

Great video. I got a question when putting the plenum back on (upper gasket) do i need to add permatex to the gasket? Thanks

Will you recommend plugging the plenimum tube and the air intake and running a hose from the pvc to catch can and the driver side hose to the catch can too?

Did you work the PCV valve? I have seen few videos were they drill out the PCV to remove the pin and opened 100%, thanks

U could have just used brake clean to clean the plenum.

great video thank you. if there is oil inside the plenum will it exit the throttle body and going into the air intake tube? 2006 Infiniti M35 and there is like oil steam on the air filter

Helpful video Question do air is sucked in from the six upper screws on the plenum?

Just to let you know you have this set up incorrectly, if you look on the OCC you will note an "out" and an "in" marked on it, the in should be for the line that will be drawing oil in, the out should go to the air intake, this way may still catch some/all of the oil, but I think there is something with the design of the baffle and a reason why those sides are specifically in vs out.

How did the catch can hold up ?

How's the oil consumption with the new catch can?

how do you like that oil catch can?

nice video bro thank you

Where u located

Can u list all parts used

You can just vent the PCV with a filter.

Not to mention my lower plenum. OMG HORRIBLE!!!!

Tip: dont be so damn handsy and talk faster lol. Get a script for assistance or sonething.