yes the engine still smokes after. it starts and never stops even after 80+ min. i dont know to much about the truck i got it 3 months ago from a guy who lived out on a farm he said it was sitting for about 8-10 years. it wasnt running when i got it. what would the right adjustment on the air/gas adjustment screw? in the process of doing the valve seals i loosened hte rocker arm adjustment screws and now when i turned the truck over it runs very rough as if it wants to turn off but doesnt it wasnt not happening before AT ALL how would i go about adjusting the rocker arm to valve stem screws is it going to be a major deal??????? please help thank you