my boss just got him a 02 F-350 cclb with the 7.3 is has 260xxx miles on it i went to fire it up this morning our company does pretrips on all our car/trucks it had been sitting over the weekend not plugged in been down in the high 20s i lite the glow plugs 3 times cranked it it hit and die like a really cold cummins lite em 3 more times it cranked up i gave it just enough fuel to idle the the high idle custom tuned in the computer took over it ran awful for 10-20 mins had a dead fire on 3 maybe 4 cylinders is this a normal cold 7.3 or something wrong with it?

 

This issue in my experiance is pretty normal. I get the same issue when my truck has been sitting in the cold for a day or so with out being plugged in. The trick is to have them plugged in everynight or plug it in for a few hours to get that block nice and warm, before you go to start it and you should have no problems.

 

yeah i have a duramax and it cranks like a champ in cold unplugged i always let it run 10 mins or so before i drive it. that is when its running stupid LB7 injectors!....my boss does not understand the different care a diesel needs over a gasser like today he got in it fired it up hard start was 24 last night then he revs it up and drives off i feel bad for that truck