hi i have just had my head gasket done and now car seems to be smoking white when on idle and just on pull away, doesnt smoke on boost at all and coolant level isnt going down at an alarming rate. i have a fuel pressure reg which i have set to 3.1 bar to run 1.0 bar of boost pressure, i have a cracked mani also at the back just wondering what this could be??? as wasnt doing it before head gasket was changed