A garage changed my EGR gsaket (told my wife it needed it) and it ran great for about 1 week now the tub going from the egr to tihe top of the intake looks loose... it has an O-Ring and it should be able to move ina nd out so free ( I think as no other 3800 at the wreckers do it) Could this little leak case it to buck like hell,, no power then power etc?