ford 6.0 hard cold start when its not cold out
 

hey i have a 2005 ford 6.0 it seems weather its cold or not out for the first start of the day it seems to turn over then fire once then stop or fire up from like a low rmp then go up to idle or sometimes it just start normal im not sure what to think my battery's are at 12.6 i have a new alternator and just put a new glow plug relay any ideas my ficm is fix from fix ficm.com and is at 48.5 to 49.0 v all times ?????

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