running rich on one side? Two part question

[evilways]

I pulled the truck out of the garage tonight and she had to sit outside for several hours, the temperature outside is 28 degrees. When I started her so she could warm up, I went to the rear to watching the steam puff out the side pipes, or should I say pipe. I have true dual exhaust setup with mufflers; they exit out just before the rear tires on each side.

The problem I noticed is that the driver side is pouring out steam constant, but the passenger side is only puffing steam intermittently. Probably 4seconds of steam and 2 seconds no steam. Shouldn’t it be constant on both sides?

Also I am running rich out of my driver side pretty bad and not so much on the passenger side, how is this corrected and does that have to do with the steam in the cold weather that I am seeing.