Hey there, anybody sure what would be causing this? I just changed out the intake on my evo and found this, I did finish installing the cold air and the car is running fine from my butt dyno and the sound, I’m pretty sure it’s oil since it is slippery

 

You can get a bit of oil in the intake from vapors, there is a hose circulating air back from the valve cover to the intake.

That seems like a fair amount though. I would check the turbo for shaft play, the seals on the turbo may be going.

 

ah ok, I did check the pcv valve and the line, both were dry and in working order. You have or know of any videos showing how’d you’d check that? Curious if there’s something specific for evos. but I’m pretty sure the seals are borked, found the car was running on a stage 2 Cobb tune while it was bone stock, so I’m sure it was over boosting like crazy, mildly painful but just another project to take care of

 

You can take the cover off the compressor inlet and put your hand on the nut that holds the wheel onto the shaft. A very small amount of side to side movement is acceptable, it should not move in/out. Inspect the blades while you have it open for any signs of contact.

Does it smoke at startup or under boost? (Another sign seals are bad)

I am sure there are a million videos on how to check it but it is a simple process.

 

Ah awesome thank you, I’ll attempt that later today after re checking the intake from cleaning. I have been told that a very small light grey/ black cloud comes out when I Matt the thing and that there is a smell, I’ve sort of just assumed that it was because it’s been running rich, but maybe oil, but I’ve checked the oil since I’ve changed it and it’s gone down a very negligible amount. On start up it’s hard to tell since I live in a very cold climate, so it’s just always smoking on start up, there is a smell though, but it’s hard to tell the difference between burnt oil and unburnt hydrocarbons and fuel since I’m running no cats. I’ll definitely take a look at some videos though