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just started happening this morning on my dads 92 tw. ecu was reset on friday after the knock sensor was fixed. leak around turbo return line recently developed as well.

turned the car off for 5 minutes and upon start up it happened again. the blue smoke is heavy for 2-3 seconds and then it clears up.

any ideas.

its from not letting the car properly warm up. let the car warmup for 10 min and you will be good.

It has nothing to do with warmup. An engine in good shape should never have blue smoke on startup, or anytime.

My guess would be bad valve seals/guides.

My guess is a bad PCV valve. Clean the PCV system to if possible.

go start a car move it and turn it off with in 30-45sec than wait 20min. start up and see smoke come out.

go actually use the turbo and that might help.

SLODRIVE wrote:It has nothing to do with warmup. An engine in good shape should never have blue smoke on startup, or anytime.

My guess would be bad valve seals/guides.

that was my dads first thought because it has low k's and it's a 92.

what should he do first, pressure check?

some details on his car:
92 tw
td05
06i/c
k&n
120,000 km
new plugs/ wires
stock tune, waste gate boost 8#

pcv valve is fine, car still smokes upon start up

Maybe your turbo is leaking. Once it gets somewhat warmed up probably seals.

so, he had it into the mechanic today and we had the turbo taken off to fix the leaky hose.

Almost zero shaftplay and no oil in the exhaust side. The mechanic did notice the whole intake was very oily, the i/c was soaked but all the synthetic oil found was very clean.

He repaired some intake leaks and replaced the intake hoses ect.
when we started it back up it smoked again.

Each startup the smoke seems to get worse. It almost starts out as a cloud of thick white smoke but it quickly turns blue as it disperses in air. It lasts 30 seconds to about a minute now.

The old man was planning on heading to Vegas this weekend for two weeks but may not be able to drive his subie because of this.

Were thinking internal engine problems but not exactley sure what?

No overheating issues or oil mixing with coolant or the other way around? Actually maybe at the same time watch your overflow tank for bubbles.

Was there literally a puddle in the intake? I am assuming you cleaned all the intake parts before assembly. Did you also take apart all off the PCV system as well?

If it is puking that much oil out the compressor side, I'd be suspect of the turbine side.

all the larger lines on the intake were replaced, bpv, f pipe ect ect.
didnt really clean it up.

zero overheating, no oil, engine seems stronger than mine, though not as powerful

exhaust side was dry, no shaft play, couldnt reach the intake side

when i left the mechanics shop and after the first start the car smoked badly and got less and less until it was gone . now, here is the weird thing, after getting off the phone with him an hour ago, after he left the mechanic he stopped at a dealership to possibly buy a car to go to vegas saturday. didnt find nothing, started the subie, no smoke. drove again for a while, off for a while, restart with no smoke.

so now, there's no smoke.

one day it comes, a few days later it goes. wtf

it seems to be similar to my car. makes a noise, something seems wrong, mysteriously fixes itself later.

i dont know.

wish i had a video.

Out of curiosity, does the car use much/any oil? I know mine uses a bit so we're constantly checking it which means occasionally it gets a little overfilled (stupid dipsticks...on the car that is). I notice when this happens it can potentially push more oil vapor out the pcv system into the intake. not sure if this is more likely to be a problem or less on a turbo.