Running Rich/misfiring

[ThoreauHD]

You bought gas with ethanol.

[jbraswell]

well i changed out the afm...nothing, checked the resistance on the idle control valve: 22 ohms, 24 ohms and 45 across all 4. Took it for a drive, and again it ran relativley normal after it was warmed up, but it did feel a litle down on power and was still running rich. But as soon as I turned it off and tried to crank it again, it was running rough and blowing black smoke