I have a 1991 Honda integra with a b16A motor. radiator was pushing out water so I did the necessary checks and found that the head gasket was blown. head gasket was replaced a few days ago, the head was skimmed and pressure tested and also the block is said to be in good shape. what could be the possible cause of this? I also removed the thermostat and did the heat check it is working fine..really need some help asap..thanks much!!