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Hard morning starts... on 2006 Ford F-350 Super Duty

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
A.M. start ups usually after the truck has sat for more than 12hrs. It has a hard miss and blows black smoke out the tailpipe. Runs like this for approx 2min then clears right up. Can anyone tell me why?
(1) Answer
(1) Comments
EGR valve is Probably sticking due to carbon deposits, or the injector spool valves are sticking, the EGR valve itself runs about $350, and depending on the mileage the repairs might be covered under the Diesel Engine Warranty with only a small deductible at your local Ford Dealer, Here is a Service Bulletin for the concern. hope this helps.
TSB
08-26-12

* 6.0L - COKING DEPOSITS DIAGNOSTIC - EGR DTCS P0401, P0402, P0404, P1335

Publication Date: December 22, 2008

FORD: 2003-2005 Excursion
2003-2007 F-Super Duty
2004-2009 E-350, E-450, E-550