Does the car have a cat?
As far as I know, Black smoke is burning oil. Blue smoke is usually rebuilt transmission fluid due to a leaking modulator valve in the older auto transmission. White smoke is due to water getting in to a cylinder from a bad gasket, cracked block or a cracked head. White smoke or semi white can be produced in several ways. One way is oil this is normally a whitish blue to blue smoke and has the apparent smell of oil being burned.I'm finally back to working on the '93 Aero "TCS Delete" project.
Reprogrammed ECU to remove TCS feature; swapped in throttle body with TPS and AIC valve from a '91 9000T. I still need to run wiring harnesses for TPS/AIC and also fabricate an extension for the throttle cable… but I was able to start it late yesterday just to see how it ran.
After a few minutes for the lifters to quiet down, the engine sounds great. Throttle response seems decent. However, there is quite a bit of smoke coming out of the exhaust… it's mostly white… only very-slightly blue......