Just a quick question..... Are some of you modded turbo's noticing black smoke upon cold start up?
Thanks
-Scott

 

No...Not here! Some white...I can't remember...someone has got to know....I think white is oil and black is coolant...but like I said I can't remember.

 

my car usually coughs up some smoke in the morning. Although, usually not black. I thought all 911's blow a little smoke at cold start up?

 

I get some white every morining (in the hot *** AZ garage). Is that normal
?

 

It's probably running overly rich when cold.

 

mine have white smoke. If your have black smoke, you better check it up.

 

Thanks for the responces.... It puffs a bit of black smoke, It looks and smeels like unburnt fuel. I was just wondering if anyone else has this happen to them.
Im guessing:
Blue smoke = Oil
White Smoke = Coolant, (most cases Steam)
Black = Unburnt Fuel ???

 

A puff of smoke on startup is NOT uncommon......

Chris

 

Blue = oil
White = coolant (smoke, not steam)
Black/Grey = unburnt fuel

Most cars dump fuel on cold start to help heat the cats up faster, as the catalyst is only functional when hot. The white (light grey?) smoke is probably fuel as well.
If it billows thick white (think Santa's beard) smoke, you might suspect a seal.(are Porsche turbos oil/coolant cooled? I know nothing about Porsches )

 

Try to use your sniffer to help identify it.

Light grey = Unburned fuel. Smells like gasoline (like when you're filling up at the gas station). This is normal in the TT on cold start. Goes away quickly.

Thick white = Burning coolant. Thick acrid smoke with a burned sickly sweet smell. Usually happens if a head gasket is blown and coolant gets into the cylinder and is combusted. One of the "pleasures" of water cooled engines such as the 996. Idle is rough and the smoke doesn't go away.

Darker/blue = Burning oil. Smells like burning oil :-) Usually happens as the engine gets older and some of the lubricating oil gets around the seals into the cylinder and combusts. Think of an old clunker taxi cab's exhaust. Usually worse on start-up and heavy engine strain (eg accelerating).

Hope this helps,
Marv

 

Did you just have an oil change? Maybe overfilled

 

Thanks for the info guys..... I did take the car to get checked out..... everything is fine, it was due to overfilling Im just happy all is well....