ford focus tdci loss of power

[Pittersuk]

Hi all

I have a problem with my 2003 focus tdci it seems to lose power at 3000rpm then kicj back in again , as well as excess smoke ou the back.

Ive heard it coul dbe the EGR valve but im not sure can anyone help?

[Pittersuk]

mmm i think its the erg valve, i had a new turbo not long ago i hope its not that again!

any idea how much a new erg valve costs?