black smoke no power help

**minty0_10** · 13-05-2007,11:15 PM

hi all just bought a 1999 a4 tdi problem with the car is the lack of power.
when the turbo suposed to kick in it just blows out black smoke so im guessing the turbos dead.
but while driving today i had no power from the turbo at all (there was a little before) but also no smoke the car was struggling to pull past 60 and also had a slight miss at the higher rev range but not all the time. then sometimes the black smoke comes back and a ever so little bit of turbo pull,

so if it is the turbo how much am i looking at for a new one and how much work is involed in fitting it

sujestions anyone thanks

**Huweth** · 14-05-2007,12:22 AM

Have you ckecked the boost pipes? Sounds like one is very loose!

**minty0_10** · 14-05-2007,09:40 AM

yes ive had a look around nothing that i can see. i would have thought if a pipe was holed or off you would be able to hear it?
what would cause the black smoke to come and go?

**Huweth** · 14-05-2007,05:22 PM

I would have thought you would have heard a big pop when it came off but if you bought the car already like it then you wouldn't have! Some of the pipes are probably very hard to see/access properly, maybe a knowledgable mate could have a look? If no pipes are off, then it could also be that the intercooler is blown. The black smoke could be caused by overfuelling when the turbo should be boosting but can't. Of course, it could be something else entirely. Can you get it on VagCOM?

**minty0_10** · 14-05-2007,05:30 PM

it only smokes when the turbo coming it theres not a lot of power when it does mind. but then a lot of the time theres no power from the turbo at all when that happens theres no black smoke either in other words

when the turbo tries to work there smoke
when its not working at all no smoke

whats vagcom?

**minty0_10** · 14-05-2007,05:52 PM

just been out to the car now and checked all the intercooler pipes cant see any holes or splits. ive also taken the inlet pipe off the turbo cant feel any play in the shaft either.

**I_am_stealth** · 19-05-2007,12:13 AM

I believe you had two problems, you fixed one of them..
The second problem you might have seems to be the variable geometry of the VNT turbo. That is a common problem..The vane control mecanism may need cleaning, and that is all.

**minty0_10** · 19-05-2007,12:22 AM

i dont think its going to mater much now if there a hole or not there.
i was hit up the back side tonight by a landrover discovery. must say through what a well built solid car the a4 is. back hatch has had it. but rear quaters and boot floor are un marked!
still down to the insurance to sort it out for the time being.

**I_am_stealth** · 19-05-2007,12:25 AM

Sorry to hear that....

**minty0_10** · 19-05-2007,12:30 AM

mmm gutted was a nice car with all the toys to.
no sure if it will be repaired or not from what i can see its going to need
back hatch and glass
1 rear quater glass
bumper
and rear light.