So I'm getting frustrated now. Whenever pressure under the engine occurs as in driving around, when I come to a stop, under my hood smokes. I changed all the lines to the turbo, and I changed my valve cover gasket, so now I don't know what to do next. I'm dreading it to be a head gasket... But if it is, ill find a way to change it. Any help on what it could still be? My coolent lines are also fine.