I have just flushed the radiator and heat core of my car. I did not mess with the engine block because I did not want to have to replace the thermostat or **** with the drain plug. I just filled it back up, put on the radiator cap, left the reservoir top open to bleed it and started it up. After about 10 minutes, I noticed smoke coming from between the valve cover and the metal-ish heat shielding that they put under the fuel rail. It is drifting out from the third cylinder area. Does anybody have any ideas what this could be from? Temperature got up to about 212 maybe 215 degrees before I shut it off. I do not know where it would have stabilized at (if at all)