Tractor started running ruff. When I start it and take off for about 30 yards then it tries to die. I have to feather the throttle to keep it running. Then it clears up for about another 30 yards and it start all over again to keep it running. I think my problem started when I bought diesel at a Walmart gas station. Is there an additive I can add to the fuel to maybe clear this up?
Doug
Doug