did a motor rebuild after my oil pump seized up and ruined my engine. its now a 2.3 stroker. when driving under 3k rpm i have no smoke. when boosting pretty good it gives a good bit of black smoke. since the engine was completely redone, the only thoughts i have would be the oil seals in the turbo itself, is there anyway to find out without taking the turbo apart?

 

The turbo is oil cooled also, you didn't replace that after an oil pump failure? Odds are that some material got in the turbo and ruined that too, or there is still some circulating through everything.

 

im trying to find out if theres anyway to check that its the turbo for sure...like take it off and test it somehow.

 

What turbo? Did you have an inline oil filter prior to the oil pump failure?

Also- FWIW - black smoke is usually fuel (meaning the car is running rich) not oil. If oil is burning it would be a white smoke with a blue hue to it.


-Bink

 

Yea, not any way that I can think of to test a turbo off the car. I know you can grab the turbine and wiggle it, but that wouldn't really help since your talking about the seals. Maybe someone else will have some more input for you.

 

black smoke is fuel

white or blue is oil.

did you get the car tunned

 

not yet no. supposed to be doing it next weekend when spec ops comes up to VA. didnt think it had to do with fuel since my oil happened to get pretty low over a 5 day period.

 

well the oil is going somewhere, maybe you do have smoke but its not black.

the best way to prove it is by having someone else drive the car and you go behind it on a different car and have your wife or trusted person driving the evo got wot so you can see clearly what color is the smoke,,,, sometimes its hard to see the smoke from the rear view when you are driving

 

My friends STI just blew the turbo seals, when your turbo seal goes out they're should be oil in your down pipe now if both both hot and cold side seals blow you should have lots of oil in your intercooler piping and intake if you have a atmospheric BOV then you'll spit out oil through their. Don't qoute me but that's what I was told by a friend that knows allot more about vehicles than me and I will be getting a straight answer soon cause where ripping it apart and sending the turbo to blouch this weekend

 

Black smoke= fuel. White smoke= water I.e. blown head gasket. Blue smoke with a definate smell is oil. If its the seals it will smoke a little regardless of engine rpm. Its called a thrust bearing for a reason. The boost pressure thrust itself against the bearing/seal keeping oil out. If its the thrust bearing/ seal there will be oil in the turbine housing and or compressor housing. U can check the turbo without taking it off. Check for shaft play. If it gets bad enough the wheels will hit either or both housing then u will really be sorry cuz u will be replacing the turbo instead of a 150 dollar thrust bearing.

 

does it start to smoke at when you gas it or when you just let your foot off the gas?

 

If the thrust bearing goes out u get shaft play until either wheel hits the housing. This was my consequence and the aftermath. U can see the bottom left blade in the pic is missing quite a bit where it hit the housing broke. And was ingested.

http://cache.msm-images.myspacecdn.c...c1e44fb838.jpg

The only good thing from this was it gave me a reason to run a precision 6776h on a honda lol.