It'll sputer and pop. When I first get on it, it'll kick smoke out, fair amount too, and sputter and pop the whole way. I only had to drive about 1/4 mile to work. Haven't been able to walk out there and take a look yet. It is a 4.2, and I tuned just about perfect. Never has even stalled or missed once since I first fired her and timed it & ajusted the carb a bit. I took off aand it was kind of poping and I looked in the rearview and saw smoke. She never smokes. Just wanted to see if you had some ideas before I went and starting messing with it? Do you think fuel or ignition? Any of your own thoughts would be great.

THANKS!!