Why is their oil in my intake tract?

[14.5 drift]

Oil every where?!?!?!? From the intercooler, to the intake pipes, to the throttle body to the intake manifold. Where is it coming from?

 

[zross1]

On the vaulve cover of our cars there is line that goes from the vaulve cover to the intake pipe before the turbo that sucks in oil/gas vapors from the head. This is why your intake track is caked with oil. A lot of people disconnect the hose and use a filter/catchcan to catch the oil instead of it getting in your intake track.

 

[14.5 drift]

Could you point out where this line is located? the benifits of it?


I am loosing oil in my car, lots of it. I was wondering if this could be the source? No oil stains on the ground, and no clouds of black smoke from the tail pipe, so this is the first signs of a leak Ive noticed.


Any way, thanks for the quick reply.



PS. How often does the catch filter need to be drained?

 

[rowlex]

Just to clarify a bit here; black smoke is unburnt fuel, blue smoke is oil, and for future reference, white smoke is coolant.

So you wouldn't see black smoke by burning oil, it will be blue.

The line is on the left side of your valve cover it runs to your intake pipe.
Another thing, cheaper than a catch can that you can do is go and buy a cheap fuel filter, 3$, snip the hose insert the fuel filter and zip tie(or clamp) the lines onto it.

 

[14.5 drift]

should any of this be main concearn for oil loss?

 

[rowlex]

How much oil are you losing?? I would assume this would not be a main cause of a LOT of oil loss, I've driven about 1200 miles with a fuel filter on that line and I have about 1/4 teaspoon of oil caught in it.

How much oil have you found in your intake tract?? Is it a lot?? If it is this could be your problem. You should also pull your intercooler off and clean it out, as it will have a good amount of oil in it too.

 

[14.5 drift]

to give an idea, the throttle body elbow, upper intercooler were dripping oil, and even as far as the turbo, I found pooling on the intake side of the turbo last week when I was doing a boost leak test..........

 

[14.5 drift]

How much oil are you losing??

1 quart every 2500 miles or so

 

[SpooledGSX98]

Here is what I did, its a fuel filter, it costs $1.99. There is a minute amount of oil inside of it after 2 weeks of use. Try it, see how it works. If it gets full, just replace it, theyre cheap.

You must be logged in to view this image or video.

 

[maximumbob]

I have been using fuel filters on that line for four years now and never had a problem. I just replaced them when were saturated with oil.

 

[pianoman]

when i got my current dsm, I had oil everywhere, where as opposed to my other two that wernt nearly as oily as this one. I dumped a lot of oil out of my intercooler. But I also noticed that the was a new pcv valve installed on the car. So im guessing that the orginal pcv valve was clogged so all the pressure was being pushed though the breather hose on the valve cover and so all that oil came with it. Check your pcv valve. You might have the same problem as i did. Oil was just everywhere, coming out the b.o.v. out the turbo compressor outlet elbow, everywhere.

 

[14.5 drift]

Where is me pcv valva, and how can I see if it hass a clog?

 

[1998GSX]

Where is me pcv valva, and how can I see if it hass a clog?

http://www.plymouthlaser.com/pcv.htm

 

[14.5 drift]

just spent my last dollar and some quarters on a filter Is their any way to tell if the exhisting valve is flowing fine, or possibly even declog it?

 

[14.5 drift]

You know some times people should just take the initiative before they ask questions, .


I took the valve off, cleaned it off, let it cool down, it was blowing air through it just fine so no obvious cloggage. Any other ideas?


Since I just put that filter on, I guewss the best thing I can really do is moniter how much oil it's getting and start from their.


When I first saw all the oil I thought it was gonna be my turbo or sum thing, oh well I guess if the t25 is still working

 

[Turbo96DSM]

Here is what I did, its a fuel filter, it costs $1.99. There is a minute amount of oil inside of it after 2 weeks of use. Try it, see how it works. If it gets full, just replace it, theyre cheap.

You must be logged in to view this image or video.

Looks just like my setup i used that same cheapass filter and i got the same BOV no recirc though but anyways a fuel filter works fine i use one between the pcv valve and manifold connection also

 

[definitiveno]

Wow, this is my old thread before the name change. It must be over a year old, .

 

[FourG63 97GST]

, now u shall get banned again.

 

[definitiveno]

, now u shall get banned again.

No ban, I mind my P's and Q's.

 

[Erok]

just for referance, the pcv is a one way check valve/controled vacum leak that keeps the crankcase from building vapors and presures, with out it your oil would become mixed with unburnt fuel(this bad ), not to mention your seals going out from to much crankcase pressure , ive seen 3 main seels get replaced on a car 400 bucks a pop, and they just kept leaking oil from unknown pressure, the sorry sons a beaches didnt understand it was being generated from a 1.25$ pcv valve being pluged by 10 years of oil/fuel vapor being fed threw it , o and please dont do what i see some people do and route their pcv valve from their valve cover to their catch can , the reason its hooked to your manifold is so vacume releives the built pressure in your engine and doesnt saturate your oil/blow seals, with out vacume the pressure will still be passed out but not as well, (HOW TO TELL IF PCV DOESNT WORK)the pcv is a one way check valve blow threw it one way=air comes out, blow threw it other way=nothing, shake it and listen to see internal's conditions also, well, this post has been way to long,
make it simple- the hose off of you valve cover to your intake pipe, route that to a catch can it will raise intercoller efficency and keep everything clean over all, PCV replace every year or 2 to be safe, and dont recerculate it to a catchcan its just dumb, oil will go straight from pcv 4 inches into combustion camber anyways, nothing lost, good luck with that, if i missed anything sorry its late and ive been working on car all night, hope this helped someone,
good night

ERiK M
SLEEpYGSX

 

[Maglin]

I don't see how no PCV will get fuel in the Oil. As with it their is almost no pressure in the crankcase under vacuum. With a vacuum in the crankcase fuel would be more apt to be pulled into the crankcase. It doesn't work quite like that. Now if you throw bad rings into the equation then you will get fuel in the oil. If the PCV fails and sticks open like they normally do then when under boost you will be pressurizing your crankcase which promotes leaks like main seals. I took my PCV out all together. You know what. My dipstick now stays put in it's tube. Yep running 22 PSI the PCV just wasn't able to hold off the pressure and I was pressurizing my crankcase. I've driven it for well over 5K miles like this. On my last oil change my oil still looks almost new. And it's not even synthetic. My motor just runs cool and my oil cooler sure does it's job. BTW my bad PCV was brand spanking new. Even tried another new one as I do like PCV valves in NA cars as they do a great job of keeping oil on the walls and out of the open air in the crank. They help with oil foaming and misting which robs power. oil foaming helps promote oil coaking which definitely has killed plenty of engines by totally blocking the oil pick-up tube.

Now you can go with a vacuum pump that will pull far more vacuum than the PCV ever will. You will see gains in HP due to the oil not misting in the crank. It's savaging promoter as well. And vacuum also helps the rings seat better thus providing less blow by.