Thanks Scott for the reply, I really appreciate it! Car is in storage right now, no oil pressure gage but thanks for a place to start.I would pull cold side after turbo plumbing and look for oil build up if you don’t find any on cold side then pull exhaust side to see if turbo seals are shot. Should be evidence of oil leaking into exhaust elbow. If you don’t find anything there then move on to compression/leak down test. Normally turbo seals will smoke when you have your foot to the floor. Do you have oil pressure gauge?
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do a leak down test . it will tell you where u are leaking . could be your valve stem seals r shot . as well as numerous other things
1987gn smoking out tail pipes on deceleration ONLY
Actually it might be smoking all the time. It's just not noticeable when you're diluting the smoke with much more exhaust.
Typically smoke on decell is oil going down the intake guides and/or up past the rings during massive amounts of vacuum. That's on manual N/A engines downshifting from redline....
In this case, there's plenty of thing to check. First pull all 6 plugs and see if one of the kids are doing their own thing.
Then look in the intake to see if the PCV is an oil injection device or if there's one oddball oily port.
If everything is dry, check the downpipe to see if the turbo is oil cooling your exhaust.