Is my turbo oil seal shot?

[99gst_racer]

I think my seal on my turbo is shot and I have a small amount of shaft play. I'm creeping really bad, so at close to WOT it creeps to a little over 21 and then after I let off, I get a little cloud of smoke behind me.

Could a bad seal in the turbo cause a little cloud of smoke?

How can I check to see if the seal is good/bad?

Also, How can I check to see if the turbo is getting enough oil?

Thanks in advance. -Paul-

 

[rjgeier]

If your turbo was blown, it most likely wouldn't make 10psi much less 21. Sounds like valve seals if it is just a slight puff of smoke.