hey i have an 89 s10 blazer 4.3 4x4 automatic. i just had some recent trouble where the valve cover gasket blew out and blew the pcv valve out of the cover. i have the gasket replaced and pcv but she still aint running right. when i start her up i have to give it gas or it will die and i noticed yesterday when i had the air breather cover out it puffed white smoke out of the TBI when i started it and after ran it for a minute at idle started smoking. So i have no idea what this is really. Could it be my injectors? plugs wires cap and rotor? im stuck any help would be greatly appreciated. thanks