It may just be too rich to stay running. Try 3 turns out and try leaning it gradually. If that doesn't work try starting at 2 turns. Or try keeping the glow plug on to see if it will run up. If it's too rich, keeping the plug on will keep it running.

Also your low end mixture might be tto rich and it's stumbling (it will smoke and spit fuel out the exhaust). Or it could be too lean (it will just die with no smoke or fuel spitting).

Is it a new plug? What kind of fuel?