leaky is blown. If the head is warped or there is loss of coolant into the cylinders you have a serious problem. Can these head bolts be retorqued or are they the one use only type? IF the head is warped beyond spec. re-torqueing is not likely to cure the problem. Replace the head gasket, and while the head is off, straight edge it to find out if it is warped. replace if needed, or have it machined. By the way how do you know it is the gasket, and not a cracked head? Check the disscussion thread on the guy with water damage for a preview of you next question if you dont bother to get this fixed.