02 GT not starting, bad fuel?

I've had my 02 GT sitting for about four months. It hasn't been driven at all. I've started it 2 or 3 times but for no longer then 10 minutes or so. Its been extremly cold out, -20 last week. Today it was about 30 and we tried to fire it up but it would crank just not fire at all. My brother took the bleed cap off the fuel rail(or what we assume is the bleed cap on the fuel rail, diesel guys here), bled a little air out and it fired. It idles horrible and you have to manually keep it raised around 1500 to stay running. The exhaust wreaks, really weird smell. Could this just be bad fuel from sitting for this long combined with the cold weather? Any ideas on what else it could be, or how we could diagnose the problem? I would just put fresh fuel in it, but it has a full tank. Any help would be appreciated!

Is their any easy way to drain these tanks? Not lucky enough for a drain plug I'm sure! I didn't really plan on leaving it sit that long, but things happen. Should I change the fuel filter, or just drain it most of the way and put good fuel in and drive it? Thanks.

I'll give it a try. One other question, the bleeder valve on the fuel rail.... When you bleed it should fuel be squirting out while cranking? We did that to start it which worked, but no fuel came out just a little air?