I have been searching for this answer everywhere. I recently had a problem with the rebuild of my turbo and it was leaking oil in my exhaust. sucks, so I took it back and now everything is perfect. the problem I'm facing now is that it is burning the old oil in the exhaust.

I've started it, drove it around for about a hour, didn't seem to get better, so I let it idle in the garage for another 2 hours while occasionally revving it to around 4k. smoke still bellowing out of the exhaust, so just to make sure it wasn't my turbo, I removed the downpipe and revved it with nothing coming out or leaking, so nothing from my engine or turbo.

I'm running a custom 3" with a test pipe. vibrant resonator, and skunk2 muffler. what can I do with my exhaust? I'm just tired of the smoke, I know it can burn off, but is there a speedy way of removing residue in the exhaust?

footnotes:
- bad turbo rebuild
- oil in exhaust
- rebuilt turbo again
- not leaking oil anymore
- old oil in exhaust causing smoke
- put about 4 hours of engine operation and smoke still bellowing
- is there a speedy way of removing residual oil in exhaust?

 

Maybe take the car for a nice long drive on the highway. Should allow the exhaust system to get nice and hot and burn any residual oil off. You are sure the smoke is not new oil burning?

 

it's not new oil, that was the reason for removing the downpipe, to see if oil was leaking out of my turbo. it's just driving me nuts. I've been driving it and I can tell the car acts right, and there's nothing from my engine and turbo, so it's reisdual oil in my exhaust that's taking forever to burn. I want to speed up the process......but is there a way?

 

Strange. Doesn't seem like it should take too long to burn off as long as no new is being added. How long did you drive with the problem/how much oil do you think leaked into the exhaust system before you got the turbo rebuilt?

 

I drove it around with the messed up turbo on there for a couple days until I removed the downpipe, that's when I discovered alot of oil dripping out, so I would say, possibly 50 miles like this.

 

Take it off and pressure wash the inside of the exhaust if its easy.

 

that sounds like a plan, but would anyone recommend engine degreaser in there exhaust? I don't thing water alone would take this out.

 

I'm assuming you have mufflers of some sort on there? More than likely its pooled in them, and/or covered their packing with oil. The only way to get it out short of tossing it all in a fire would be to wash it out. Use some sort of solvent, pour it in (mist at the end of pipes if you can), then watch it come out black & oily.

 

when you say solvent, what do you mean by that? like 409 or simple green? or something like laundry detergent?

 

Where the exhaust curves up over the LCA it is probably accumulating. I had this same annoying problem with my Mustang.

I removed the exhaust, blew a rope through it with an air hose, balled up a shop rag and tied it to the rope and dragged it through the exhaust. Worked pretty well.

 

I'm going to remove the exhaust tomorrow and try some soap and probably some engine degreaser and spay it out with water......any other ideas?