cold weather starting

nope, maybe your o-ring to your filter is messed up or your bleeder screw is leaking air and not sealing properly. When was the last time you changed your fuel filter? I normally put a little petroleum jelly on the gaskets/o-rings and have never had a problem. Also had the truck sit for a month this last summer with no problems.

I'd guess your truck has a air leak in the fuel system also. My 96 CTD had a very tiny crack in a flexible fuel line. Replaced the flexible line and solved the hard starting issue. I'll replace the flex line on my chevy before that long, once is enough.

i'm curious if your fuel is gelling a little. Has it been doing this a while or just this one time?

Cold starting

Had my 2001 in to dealer just under warranty they replaced fuel line , filter, and what they thought was the problem the fuel injector modular it seems to have worked . I even think it runs better.Bryan