Ok, I been having this smoking issue for the last year. It usually get's worst when it's hot outside. The smoking would come and go randomly. It usually smokes the most when I'm at a stoplight, than I would take off and a cloud of smoke would come out my exhaust. Sometimes it does this, sometimes it does not. It is the most noticeable during summer time. Sometimes it would happen when I would let off the gas and roll to a stop. When I'm driving on the freeway or keeping a constant speed, it does not smoke. Do you guys think this could be due to my turbo? Engine currently has 90k miles. Btw, it is 100% oil that is burning, not coolant. Compression is about 210 across. I'm currently running a precision t3/60-1

 

What restictor are you running and is the turbo bb or journal?

 

just started? I would think that would rule out drain, if it hasn't been doing that for a while and you haven't changed anything. I have a slightly better precision turbo if you need one

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I'm running a Journal bearing. I am running a restrictor from AFI. This turbo was on my first engine, which had oil starvation issues and eventually gave out. I'm currently on my second engine.

 

What size feed line and restrictor?

 

It could also be your PCV valve. Mine did it on a supercharged setup. Put a catch can in between and it never happened again

 

I honestly don't know, I think it's a -3. This is my second turbo setup and it smoked just like the first one. It was not smoking today. It only happens sometimes, so that is why this issue confuses me. It also happens when I go in reverse sometimes. I been having this issue for awhile, and the smoking does not seem to be getting any better or worse. When I spun the turbo by hand, it feels like there is a rough spot.

 

I am currently running a Supra PCV valve. I tried running it to the atmosphere and it still smoked. I think I might just take my turbo off and get it rebuilt. A local company charges $200.

 

It could be turbo, but all the PCV valve does is prevent boost from going into the crankcase. Under vacuum, it will allow the crankcase pressure to be sucked into the manifold, which also has the chance to suck in oil from the valve cover. If it's turbo, you should see oil in your intercooler piping. Is the problem happening just cruising around or after letting off of a hard pull and letting the engine brake itself in gear?

 

It happens randomly, it can go from blowing lots of smoke, to blowing nothing. The car would do it when I start accelerating from a stop, than it would go away. Sometimes it would start puffing smoke at idle, than go away after i start driving.