Puking Oil out of somewhere .... PCV?

[nagelandy55]

Hey guys, had the truck out for a little rip tonight. I was driving around and the truck started to act like it had a vac leak. So i drove it home and found that there was some oil leaking from the drivers side of the engine. I also found that the PCV thingy was out of its hole (may have gotten blown out). That would explain my vac leak but not the oil leak. I'm confused as to what i should do with my PCV system.

What is everyone doing with theres? Plug it?

[freebyrd24]

+1

i am having the same problems. I'm still testing and tuning just driving in my neighborhood and its bossting great, but then i notice smoke behind me. When I stop the PCV valve is pushed out of its place. It's happened twice on two runs. Any ideas?

[Kurt]

What are you guys doing with the valve cover vent? You can't plug it because then the crankcase gasses have no where to go when you boost.... so it pushes out the easiest thing, which is your pcv valve.

You need to vent your crank case. Most poeple just vent to atmosphere. The screw in k&n filter that replaces your oil filler cap is a common remedy, but messy.

I kept mine i a closed circuit.

[freebyrd24]

how did you keep yours a closed circuit? And the air filter method becomes messy if u use a screw in filter?

[freebyrd24]

So i drove it home and found that there was some oil leaking from the drivers side of the engine. I also found that the PCV thingy was out of its hole (may have gotten blown out). That would explain my vac leak but not the oil leak.

That will explain the oil leak. Mine puked out oil when it happened

[nagelandy55]

Hehe my bad had the valve cover breather plugged :=) (actually just recently did that so that would be why it didn't leak last summer)

I'll hook it up to the factory location (compressor inlet)

Freebyrd - the oil leak is probably because of the pressure build up before the oil seperator blew out. The oil will leak out of the dipstick tube when under pressure.

[freebyrd24]

Ahhh okay i just had oil puking about everywhere. how was your breather plugged? Did you have a breather in place of the oil fill cap like suggested?

[freebyrd24]

what did you hook up to the compressor inlet? sorry im confused hahaha

[Kurt]

LOL! Don't hook it to the compressor outlet! You will pressurize your crankcase!

If you want to keep it in a closed circuit you would hook the vent from your valve cover to compressor INLET. But I don't recommend this unless you use a catch can because otherwise any suspended oil in the gasses will go through your compressor. Not the end of the world but not great either. This is how the factory tbird/svo setup is, except instead of using a catch can they used that round canister full of a wire mesh that sat on top of the valve cover to catch any blow by.

The reason the k&n filter on the valve cover is messy because the gasses that come out of your crankcase usually has oil in it and so your valve cover will eventually get covered in oil.

Typically daily drivers should run a closed circuit for a number of reasons. More race inspired setups should vent to atmosphere.

[nagelandy55]

Haven't done anything yet, was just proposing what i was going to do.

From factory the valve cover breather is hooked up to a fitting on the turbo compressor housing, on the intake side. The N/A engines have them hooked up between the MAF and TB. I am going to hook my VC breather up to the fitting on the turbo. Gotta make sure its on the intake side, or when you boost you'll be pressurizing the motor through the VC breather.

I currently have a little rubber boot over the VC breather, didn't like it spewing oil vapor on my hood. Apparently that was a bad idea though.

[nagelandy55]

No one said compressor outlet

LOL! Don't hook it to the compressor outlet! You will pressurize your crankcase!

If you want to keep it in a closed circuit you would hook the vent from your valve cover to compressor INLET. But I don't recommend this unless you use a catch can because otherwise any suspended oil in the gasses will go through your compressor. Not the end of the world but not great either. This is how the factory tbird/svo setup is, except instead of using a catch can they used that round canister full of a wire mesh that sat on top of the valve cover to catch any blow by.

The reason the k&n filter on the valve cover is messy because the gasses that come out of your crankcase usually has oil in it and so your valve cover will eventually get covered in oil.

Typically daily drivers should run a closed circuit for a number of reasons. More race inspired setups should vent to atmosphere.

[Kurt]

No one said compressor outlet

Woops.. my bad :)

[freebyrd24]

Any pictures? Where do you get this setup from?

[Kurt]

Looking at the picture, you see the square canister at the lower left of the picture next to the air filter. That is the catch can. If you look closely, you can see it has a sight glass on the side of it to see if it has oil in it. That particular unit is a greddy but they are made by a lot of manufactures.
One hose goes to the nipple on the valve cover, the other hose goes to the Turbocharger inlet pipe. This way, all crankcase vapor has to pass through the catch can before it goes back to the engine.

http://recklessford.com/4images/data/media/20/2k_Bay_M.jpg

I prefer this setup for two main reasons. One, is that its a closed system and all air is metered even the the air sucked through the crankcase in the pcv system. Not a big deal but that's how the oem's do it to. The other bigger reason is that this way there is always positive venting (read: vacuum) on the crankcase, weather driving normal or under boost. The system will not allow pressure to build up in the crankcase. Now, the vent to atmosphere setups (the one with the K&N filter) will not allow pressure to build up in the crankcase either. However, it doesn't suck it out under boost either like the closed system does.

Like I said before, a closed system isn't the best idea for setups that are run closer to the edge (like Jess's :) ) because even small amounts of oil vapor can be detrimental to overall power production and detonation prevention.

[freebyrd24]

Thank you for the pic! Excellent explanation too. Whats the technical name for it? I'll start searching for it tomorrow, hopefully I can get past this problem

[Kurt]

It's referred to as an "oil catch can". Google it and you will find a ton of info from DIY to installation to manufactures etc.

[Jesshwarren]

I run a open valve cover vent it has a 3ft hose routing it away from the motor. I would recommend running open PCV also. I had a LOT of trouble in the day with the PCV pressurizing the crank case.

[freebyrd24]

how do you run open pcv? Same type of setup? Its real tight there in these motors! haha

[freebyrd24]

If you run that line to the separator from the valve cover, what do you do with the hole that the line used to plug into by the throttle body?

[Kurt]

If you run that line to the separator from the valve cover, what do you do with the hole that the line used to plug into by the throttle body?

I pulled the steel tube out (its a loose press fit). Then drilled and tapped it for a 1/8" pipe plug. Then I put a pipe plug in it.

Or you could just put a rubber cap over it. But I have found that those don't live to long and require frequent replacing.

[nagelandy55]

Got everything off of the head tonight. Found out that the old PCV valve was gutted, the end broke off and there where no interenals (may have been a bit of a vac leak :=) ). I also got a new TC one to put on there, i hope it works. If not i'll just scrap everything and vent it.

[Ranger4banger97]

^ haha thats wierd? Your using your stocker pcv? So i guess if your a multiple owner, the they did that then? Yea if that TC one doesnt work out for ya just do what Jess did and tube it down past the engine bay or something. I'm probably gonna do that once i go turbo soon, because i dont feel like investing in a puke tank, and if you think about it, a k&n topper really doesnt do anything, it just catches the oil and vents to atmosphere and gets clogged with oil. Just tube it, screw it haha

[freebyrd24]

I put an oil catch can on it. The truck no longer wants to idle, also its very smokey out the exhaust, and from around the turbo. the oil collecting in the catch can is a beige color, doesnt look too good. any ideas? im losing my mind

[Jesshwarren]

I put an oil catch can on it. The truck no longer wants to idle, also its very smokey out the exhaust, and from around the turbo. the oil collecting in the catch can is a beige color, doesnt look too good. any ideas? im losing my mind


It sounds like your turbo may be leaking a little oil. I will put some pics up tonight of just how I run my PCV with check valves. I keep vac in the crank case so no matter what the oil will never leak out to the exhaust side of the turbo. It takes 2 check valves. I use brass check valves so they will never fail.

I use 2 of the check valves below. One stops boost from going to the crank case the other works in reverse it lets blow by out under boost but will shut at part throttle to keep vac in the crank case. I tried a lot of check valves and they all failed or took to much resistance to operate. These will never fail and it takes very little vac or PSI to operate the valve. They must be upright or they won't work.

http://www.acehardwareoutlet.com/(kjzlvf55udfztm554rymwr3l)/ProductDetails.aspx?SKU=44043
http://images.acehardwareoutlet.com/Products/44043_061030.jpg

[freebyrd24]

i was leaning towards my turbo leaking oil as well. I'm going to try to inspect it tomorrow. also would the catch can work the same as your setup? Is my turbo leaking oil causing all of my problems? or just the burning oil problem

[freebyrd24]

how can i tell if its leaking and what can i do to fix it?

[freebyrd24]

Just an update, took the turbo off. There is a high amount of oil inside of the header, all around the base gasket to the turbo, and just coated on the inside of the header when I took it off. There was also some globs of oil on the inside of the pipe that was connected to the compressor outlet. Not too much but still some oil there. There was a ton collecting in the header. Any ideas where the problem is? Is the motor pushing out oil?

[nagelandy55]

Maybe the HG is leaking oil into your combustion chamber, but that truck probably wouldn't run too good if that was the case. Did you rebuild your motor recently?

[freebyrd24]

I havent rebuilt the motor at all. It's all stock The truck didn't like idling, but ran decently through the RPMS basically from when it boosted-on. Any way I can check it out?

[nagelandy55]

^ haha thats wierd? Your using your stocker pcv? So i guess if your a multiple owner, the they did that then?

Nope i did this. Had no idea what the PCV system was at the time of the swap, now i know :=)

[freebyrd24]

Just completed a compression test. from 1-4....... 170-160-60-80. I added some oil to those low cylinders and tested again and the numbers went way up, indicating piston rings as the problem.

I should have just put new internals in from the start

[freebyrd24]

Based on the test and info, does that sound like the probable cause?

[nagelandy55]

Sounds like it to me, could also be the Head Gasket. If you haven't put forged components in it yet i would do that. If you have i'd pull the head and have a look at the HG and see if its gone.

[freebyrd24]

Yup still NA. I was thinking maybe head gasket since the cylinders are adjacent, but pouring a little oil into the cylinders and re-running the test bumped the compression way way up. Plus with pushing oil out of the exhaust, pushing a high amount of steam/air out of the crankcase at idle. it all makes sense. i gotta find some cheap pistons and rods!

[nagelandy55]

Ahh i see, well get some turbo pistons in there and crank that boost. You'll love it. I felt a HUGE difference when i went from 10-15psi.
Remember to get a Felpro 1035 HG too.

[freebyrd24]

Wheres the best/cheapest place to pick up that head gasket? I got halfway done takin the motor out today before a pack of bee's had there way with me. The oil is milky and the coolant had some oil in it. That screams head gasket problem, but the test indicated piston rings. I think I'll just do turbo pistons and rods to be sure

[Kurt]

When I did my short block, I got everything from rockauto.com. Crank kit, rings, gaskets, etc.

They have the Felpro 1035 for $42.79.

[nagelandy55]

Well i put everything together with the PCV in place, drove it for a few days and found i had another vac leak. So i took it apart and found that the brand new TC PCV valve was letting air through the wrong way. :banghead:

So i ripped everything apart again, new gaskets everywhere and just vented the PCV system with a hose going to the ground. Now its running good with no oil leaks and no vac leaks.

To anyone having problems with their PCV system, don't waste your time trying to fix it VENT THAT $HIT :thumbsup:

[bruiser]

Well i put everything together with the PCV in place, drove it for a few days and found i had another vac leak. So i took it apart and found that the brand new TC PCV valve was letting air through the wrong way. :banghead:

So i ripped everything apart again, new gaskets everywhere and just vented the PCV system with a hose going to the ground. Now its running good with no oil leaks and no vac leaks.

To anyone having problems with their PCV system, don't waste your time trying to fix it VENT THAT $HIT :thumbsup:


you could also use a oil catch can

[muddpawz]

soo the easiest and cheapest way to solve this problem is....3ft of hose from the valve cover vent to the ground? just thought of this being a problem so i searched it and lo and behold someones already been through it!! love this site man!!

[nagelandy55]

If posting my screwup prevents someone from doing the same thing, i'm more than satisfied.

Vent it!

[michaelconklin]

Ok so my truck just started this same issue threw reading this I have gotten confused and not sure what to do about fixing the oil from the dipstick I have the factory turbo coupe Pcv setup, breather on the valvecover to the inlet on the turbo and then the valve from under the intake to next to the dissy I just replaced the Pcv valve and yea I thought my rearmain was leaking but now I'm sure it's coming from the dipstick so help me lol like I said I read the posts but I don't quite understand the options to fix this

[Riddle_Rob]

Just wondering...

you all say put a hose on valve cover.

HOW do I put a hose from the lil spot on the back of the turbocoupe valvecover? You know... this one.

http://carphotos.cardomain.com/ride_images/1/2056/1781/5138390104_large.jpg

[gumby]

i welded a -AN fitting to my valvecover in that location.

[TURBO Ranger]

On mine, it developed a horrible oil leak, and it was the little copper ring that seals the oil passage between the head and block. It had ruptured, so full oil pressure was pushing past it. It looked like the breather or the valve cover or the main, but a headgasket fixed it, so look at the left rear corner of the head/block to check that one.

[Riddle_Rob]

Serious? That seems to be the exact location my engine is just PISSING oil right now. Only under high revs too it seems.

So I have to take the head off???? Really don't wanna do that right now. It's my DD but, I'm getting so much oil on manifold and ground it's just burning off creating a huge smoke cloud at lights etc...

FML. LOL I'm going to inspect further tomorrow.

Also, a headgasket fixed it? You weren't using the 1035? Or did you put on a new 1035?