Ok so my motor got timed..it was running fine..I was driving then it over heated....I turned my car off quick then I pull over and turn it back on then open the hood then I see smoke coming out the valve cover u know where u can put a little filter....I have a hose there and smoke was coming out that hose...what could it be? All I did was chance my head gasket and take the head to the machine shop..also my car is like sputtering I don't know why?? Any help?