White Smoke Under Hard Acceleration

[Hammer]

Been noticing a large amount of white smoke under hard acceleration. Usually sends out a nice cloud under WOT, but after that, nothing more. I assume this to be condensation that is being blasted out, but figured I'd post it up anyway to see if it could be anything else since I didn't find much in the search. Thanks in advance.

[DRAKLORE]

Head gasket? Does your exhaust smell sweet? Is your coolant or oil low?

[2001 a6 4.2]

White smoke is usually condensation, oil smoke has a slight blue tint.

[jimrobbington]

Checked your oil consumption lately?

[Hammer]

- Oil consumption does it's usual quart every 1-2K miles.
- Coolant is full.
- Motor has fresh Pennzoil Ultra in it.
- Not sure about the sweet smell. Will have to check that out.

[LuckyNumberB7]

- Oil consumption does it's usual quart every 1-2K miles.
- Coolant is full.
- Motor has fresh Pennzoil Ultra in it.
- Not sure about the sweet smell. Will have to check that out.

1 qt every 1-2k miles? That sounds like a lot of consumption; I'm <1 qt for 5k miles. What consumption rate range does Audi say is acceptable/within spec?

[dA4n600rr]

a quart every 3K-5K depending on driving habbits

[Hammer]

1 qt every 1-2k miles? That sounds like a lot of consumption; I'm <1 qt for 5k miles. What consumption rate range does Audi say is acceptable/within spec?

Audi says a quart every thousand miles is normal...bullshit, basically.

[Der Konig]

Hm, buddy had this same issue and said the smoke really didn't have a blueish tint. Could be play in the compressor shaft of the turbo.

[CorneliusRox]

Usually white smoke is unburn fuel which usually means one of a few things.

-You have a bad injector (leaking when it shoudnt)
-Something like your turbo isnt spooling up right (maybe the spring in the waste gate is saging (or are these electronic))
-Your fuel map is fat on WOT top end

[yettavr6]

I've always been told that white smoke at WOT is normal. White smoke means the engine is running rich, which i've always heard is normal at WOT. I was told by an ECU tuner that basically when you hit WOT all (or most?) of the sensors are ignored and the ECU just dumps a preset amount of fuel in. This is called "Open Loop" and the ECU also runs in this mode before the engine fully warms up or when a sensor has malfunctioned.

[Der Konig]

Hm, buddy had this same issue and said the smoke really didn't have a blueish tint. Could be play in the compressor shaft of the turbo.

[Hammer]

Smoke still occurs sporadically at WOT and there is a sweetish smell to the exhaust. That is interesting about the "open loop" in the map...makes sense.