I have a 1991 b2200 fuel injected. Cold start fires rite up, drive ten minutes, turn off, run in the store fire rite up and then idles rough for a second and dies. If i start again with foot barely on the gas is will run and drive fine. I changed plugs, wires, cap rotor, flushed water, changed oil, etc. Again, when driving no issues that i can tell, only when at idle after at running temp.