White/Greyish smoke is usually water getting into the cylinder block. I know of a few things it could be. I'm not sure about your car, but in some cases, its a cylinder head gasket, or intake manifold gasket. Its somewhere near a coolant flow and access to the block head. Some cars do have coolant parts attached to very near the valve cover, but I've never seen it necessary to remove a valve cover to work on a coolant part.
Saturday, March 25th, 2006 AT 12:16 AM