Do the cleaning process at the top of the 6.0 page. I'll bet it's nice and rusty if it's been sitting for 5 months. If they sit for a week installed on the truck they start rusting up.

It might be worth checking your glow plugs and glow plug relays out.

Try plugging the truck in over night and starting it again in the morning and see if the problem is the same/better/worse.

 

[QUOTE=Mdub707;833409]Do the cleaning process at the top of the 6.0 page. I'll bet it's nice and rusty if it's been sitting for 5 months. If they sit for a week installed on the truck they start rusting up.QUOTE]

grandfather has the same issue with his turbo on his 6.0. 05' with 30k on it (it doesnt really leave the garage much haha). its been to ford for 3 now under warranty because of the rusting issue.