Hi my 56k focus has had a new the clutch, DMF, 3 injectors, software update as well as an oil,fuel and air filter change and a new exhaust my TDCI has developed a new fault.

It needs 2500RPM to pull away in first gear and pours out a shed load of black smoke. its had the EGR valve cleaned in the past and has no fault codes on a diagnostic scan it. local diesel specialist is stumped and has recommended a chip change?

Can anyone give some thoughts on what the issue could be please??

Big bucks spent and stilll no joy. in every othe rgear the car drives and pulls fantastic.

Help...Please