85 c10 need help, cold starting and high idle

[timjt]

I have an 85 c10 that won't stay on when I start it unless I keep the gas down for about 10 min, till its warmed up to normal running temperature. Problem with getting it started in the 'cold' only in the 40s.... ? I know there are threads about this but I can't find them. I also know this is probably a common problem but I'm still learning. Any ideas? Since its acting like its starved for fuel I tried adjusting the idle just for kicks and it helped a little but then once its running normally or its a warm day its idling too high