Oil in intercooler... wtf how

[Casey-G]

I agree with you..

but I'm open to any ideas....


facts:

- It is motor oil
- its not from the cam breather
- i hate my car im gonna sell it


ha

[LeeRoy]

Are there any breather hoses of any type going to any pipe between the intercooler and air fiter?

[MWP]

It should be a 5min job to work out where it's coming from.
It ain't that difficult.

[fixeruperer]

you say you have a catch can instead of that oil sucking through your intake......... the oil could be there from before the catch can.

[thechuckster]

my setup is 3sgte - but i had same thing that resulted from two things - rooted turbo seals (obviously not your cause) and blocked vacuum line from cam cover to throttle body. Only ventilation from crankcase was then the main breather (feeds pre-turbo, would be pre-SC in your motor?) and under boost, it spat a lot of oil out which then collected in the intercooler.

Two fixes for me - unblock the vacuum line (was full of gunk in the actual throttle body) and replace turbo.

Anyway - have a look at the PCV system on your motor.

[Casey-G]

Are there any breather hoses of any type going to any pipe between the intercooler and air fiter?

No breathers

It should be a 5min job to work out where it's coming from.
It ain't that difficult.

Oh really?

you say you have a catch can instead of that oil sucking through your intake......... the oil could be there from before the catch can.

I have a catch can coming off the cam covers venting to atmosphere, and there has only been a tiny little bit of minuscule condensation (water)

there is no way for oil to get into the intake from the cam covers..

my setup is 3sgte - but i had same thing that resulted from two things - rooted turbo seals (obviously not your cause) and blocked vacuum line from cam cover to throttle body. Only ventilation from crankcase was then the main breather (feeds pre-turbo, would be pre-SC in your motor?) and under boost, it spat a lot of oil out which then collected in the inter cooler.

Two fixes for me - unblock the vacuum line (was full of gunk in the actual throttle body) and replace turbo.

Anyway - have a look at the PCV system on your motor.

Do not have a PCV on my motor.. only a breather that vents before the intake off the cam covers that i have since vented into a bottle.. and there is no oil coming out of it.

[fixeruperer]

so when you rebuilt this motor last it had a catch can ?
OR
you have an old motor that was running the OG PCV breather setup THEN you changed to the catch can, IF you changed FROM the PCV the oil could be the oil from the old setup ????
picken up what im saying ???

[Casey-G]

I get what your saying mate, but the 4agze doesnt have a PCV, it has a breather off the cam covers that just vents in pre-SC.. i already thought about the oil coming from the covers problem a while back so i just took a bit of hose and had it vent into a bottle that i can just pull out and empty..

but there isnt even a drop coming out of it, just a little bit of condensation after it sits over a cold night or for a while during the week.




daily cars are supposed to be trouble free eh?

[fixeruperer]

MY BAD! thats right they dont.

but see in this pic, you have the cam cover breather barb and one at the first intake pipe pre t/b. how do they normally link ? i forgot.

edit, just read you post. and your not getting any oil from there anyway ?, maybe with the motor running a vacuum on that aswell as the crankcase is venting, its enough to suck oil.

[Casey-G]

Exactly like you just said, on that barb to the cam covers..

the TB is also Pre SC as the SC draws through the TB

[feral4mr2]

you sure it isnt old oil residue from before you put the catch can off the cam cover?

ALL 4agze's get a oil residue into the i/c and pipes from the top of the engine being 'sucked' into a vacum from the s/c when the throttle is opened.
once in a while i used to take all my pipes and i/c off and give them a flush out with general purpose thinners.

[Casey-G]

Pretty sure the oil has been there a while, but that being said i have since replaced the silicone inter cooler 2.5">2" reducers and its made an entirely new engine of it.. im not sure if the ABV is working the way it should but im yet to do more testing on that.


Putting the little pool of oil in the cooler down to when i first got the motor going, and possibly overfilled the oil which pumped it up out of the cam cover breather when it was still attached.. i fouled every spark plug that day so i think may relate back to this issue..


Yay for problem solving!