problem with turbo

[joevodka69]

i'm having this problem with my turbo system. i am getting blue smoke coming out my tail pipe, so i suspected it was the seal. i replaced it with a new turbo and same thing. so now i decided to take off the turbo to see if there was somke from the eninge but found none. then i put the turbo back on and removed the oil feed line but same problem (smoke from the tail pipe) then i removed the oil return line and no more smoke. ? i'm lost and any info appreicated

 

[tenn-gsx]

Your return line is clogged causing it to build pressure behind the oil seals. Clean out or replace the return line.

 

[marshall13]

If you are gunking up in your return line, you could be gunking up other places, too, though. Now might be a good time to flush out your oil system, too.