MaDD-Myke

well this is how it is....i had a EVO 9 BOV on my EVO 8....took it off and install SSQV BOV....afterwards i realize that my upper intercooler piping had oil residue in it..then noticed that that my BOV i installed was not sounding like it should but instead the sound was coming out my cold air intake,so i checked it out and my BOV had oil residue inside just pouring out...what causes this ?...what are signs of turbos going bad?..could it be something wrong inside my engine?
any ideas anyone?

foxbear2277

iTrader: (3)

This is normal, most likely due to crankcase vetilation. Install a catch can between the valve cover and intake if its that excessive and your worried. Highly doubt a bad turbo, but I could be wrong on that...

fastyouth1313

iTrader: (32)

take off your intake and check for in and out shaft play, if there is in and out shaft play theres your answer.

take off the hot side "licp" if theres is oil in there then again its your turbo.

let it get to operating temp then (while in nuetral) rev it to red line and see if you get some blue tinted smoke. if you do....most likley a blown head gasket...but that wouldnt answer the oil in the piping......

binky

iTrader: (11)

The BOV needs some oil to keep it lubricated, so that it will work properly.

Some of the oil you may be seeing is probably from the valve cover breather port, which is normal.

Is any part of the PCV system connected to the intake? If it's stock, then it is. This is for emissions purposes.

In order to fix this issue, you will have to invest in a catch can setup so you can 'catch' the excess blow-by oil.

You will also need to clean your intercooler (with something like diesel fuel) to get all of the existing oil out of it. This should stop any oil from entering the intercooler piping (and your BOV).



-Bink

boostedtres

iTrader: (4)

i agree with bink. check everything else out then go from there. i highly doubt its a bad turbo, most likely due to blow by. did you recently just bump up your power significantly? or is this just a sudden occurence?

i am running the stock turbo and have been out of the game for about 6 months so take my advice with a grain of salt. but my previous BOV had oil that was leaking out of it. it was at the same time my bov started leaking in general and was not holding boost properly. i simply swapped out to a re-circ valve and problem was solved. I also have a catch can waiting to be installed but i am lazy, havent had any problems since then.

could be a variety of problems but if your not seeing dramatic power loss or blue/white smoke coming out, i highly doubt its your turbo.

any reason you bout the ssq? it is well known that this is a terrible choice for evos. not saying this is the root of your problem, but if your pushing serious power and have any concern for driveability you may want to consider another option.

cheers and good luck with your diagnosis.

MaDD-Myke

but is it normal for the BOV sounds to be coming out the air intake rather than the BOV itself...

foxbear2277

iTrader: (3)

The magic answer is yes...if it is reciculated..... No if its vent to atmosphere

MaDD-Myke

well its vented to atmosphere but it aint working right like it should

binky

iTrader: (11)

Are you tuned on speed-density? If not, you shouldn't be doing VTA on a MAF setup.


-Bink