I changed the turbo now white smoke coming out of my exhaust

head gasket is blown

Regarding 2001 audi a6 quattro 2.7t....i was driving to work the car was fine then white smoke starting coming from under the hood and tail pipe. i stopped veilce and alot of oil was dripping from front of car. I towed it home and i looked under the hood and there was oil from valve cover gasket. i let the car sit for a few days, had it running again for a good hour and no white smoke was coming out. I removed the valve cover and gaskets are all bad. i want to know can the valve cover gasket leak cause the white smoke to come from exhaust pipe?

The white smoke you are seeing is steam. From your description, sounds like you have coolent seeping into the combustion chamber, mixing with your fuel/air, and exiting out through your exhaust as steam. 1, blown head gasket. 2. cracked head or block, 3, warped head due to overheating. Most common is #1.

Does it blows white smoke ? And have you noticed oil in the end of exhaust pipe. If so remove the intake from turbo and check the shaft movement, and rebuilt your turbo. This http://www.turbochargerpros.com/repair/ford-turbo-repair.htm helps to repair your Ford turbo. If it is black smoke, you must replace your Fuel Pressure Regulator.

2001 7.3 TURBO DIESEL ,CRANKS WHITE SMOKE COMING OUT OF THE TURBO, AND THE TAIL PIPE NO START

Hi there,
The most common concensus with white smoke is coolant leaking into some where in the combustion chamber as in head gasket, however you have said its not.
turbos unless there is massive internal damage usually blow out black/grey sooty smoke.
Is there bearing noise in the turbo at all? or Loss of boost?
If so it could be early indication of the turbo failing.
I would reccomend goign to a mechanic and having a leak down test perfomormed. Sometimes called a compression test. Or you could buy a decent compression tester and check it yourself.
IT coudl also mean tha tna oil seal is blown or leaking
Check your coolant resivour to see if there is any oil in there and check you oil dipstick to see if it is milky or off colour. Generally if there is either of these two it means that there is some \sort of leak between the two systems Oil and coolant.
Anotehr common problem with these engines is a crack or warped head itself.
However if your sure its not either of the above it could possibly be water getting into the combustion chamber via the injectors as in dirty fuel, however you would notice knocking and predetonation/ pinging surely. and generally the car woudl be running really rough.
Make sure you keep a good eye on the coolant level as if it runs out it will surely kill your turbo friend.
Hope this helps you out there,
Cheers
STeve

firstly you haven't said hat colour of smoke is coming from rear is it black,white,or a blueish colour secondly have you checked suspension on rear possibilties are worn shox,broken springs,rear suspension bushes or rear drop links hope this is helpful.

you have a blown head gasket you need to get it to a shop as soon as you can

White smoke usually associated with water or moisture. it doesn't take too much water to produce white smoke. check

1. cloudy oil under oil cap
2. leak through gasket from cooling jacket to combustion chamber

Good chance that a turbo coupling is loose/torn. But, can be as simple as you just need to tighten the clamps on the compressor side outlet piping. Check all of your turbo piping for leaks, I had the same problem. And if I am right then there's should be excessive black smoke coming out of the exhaust pipe.