z4 smoke on startup ?

[steve_bmw]

I have had my z4 a year now and I spotted some smoke when I start the engine from cold, its never smoked before.
I dont do that many miles at the moment and I have noticed alot of that white gunge under the filler cap and in the head vent pipe that leads to the ccv valve.
The smoke is grey with a hint of blue and lasts for a few seconds, could this be the white oil/water mixed up gunge in the inlet manifold/breather system being sucked into the engine and burning off?

There are no other issues it drives perfect and in the lasy year I have never had to top the oil up once.

Maybe a good motorway run would do it good, I did give it an italian tune up earlier so ill see what its like in the morning.

[steve_bmw]

Just another point i recall my e39 with same engine did it a few times last year when it was cold, any common issues anyone aware of or is it just one of those things?
Cheers

[tgr]

Give it a good run, but check the oil level first and check again afterwards. If the crank case breather is blocked, replacement can resolve oil consumption problems (which it sounds like you don't have), but nevertheless a good long run should get the engine running at ideal operating temperature and hopefully the problem will right itself

[steve_bmw]

italian tune up has worked a treat, the white gunge has now gone fron the pipes and it has not smoked at all.
Happy days.