HELP !!

[gaston]

Hy, my name is Gaston and I'm sending this mail searching for some answear about a problem in my car.

I'm the owner of a "1992" Nissan 300ZX TWIN TURBO , 3 months ago I remove my engine. I take the Turbos to GARRETs dealer in my country (Argentina) and they made:On turbo #1 , a complete service without replacing any mechanical part, and on Turbo # 2 they change the complete body puting a new one.

Then put my engine in my car and only on specials moments my car "Smokes white"

Sinthoms:-Both turbos work excellent at every regim .-My car "ONLY" Smokes after 5 minutes at iddle speed (700RPM),but they stop smoking when I start running....VERY RARE!! -It Doesn't smoke when I'm running or when I make a shift (Someone told me that this tells , the oil valve seals and the rings are good)

Garrets dealer tells me that might be PCV valves are bad , but I really don't think so ¿¿??ATPTUBO dealer tells me to put same restrict Oil Pressure (ATP-OIL-021), but when the cars was new (okm) it never smoke and now the turbos are new again so it doest have to smoke ¿¿??.

Really I don't know what's happening there ¿The turbos were badly repair or I have my valve oil seals bad or .... ?

¿Do have same diagnostics for this?

Thanks for allRegards