Focus Tdci Problems

[Mitsimatt]

Hi just brought a tdci focus 03 90,000 mile serviced from new having problems in the morning I start it up and it smokes loads and sounds like it misfiring running rough I have to rev it up till it stops and the smoke stops when I drive it it hesitates juddering then it goes fine had it checked on snap on dia machine it came up with maf sensor so I got a new one and cleared the codes then took it out for a spin and still happening the same code came up again would the map sensor cause it and the turbo seems to spool up when idling any ideas thanks

[mintalkin]

it could be a stuck or gummed up egr valve, these can be removed and cleaned.