Are both the upper and lower radiator hoses hot to the touch at or near overheat? It could be a stuck closed thermostat. Quite possibly it could have blown head gaskets, this may explain the excessive pressure to crack a side tank. Determine if you have coolant flowing, both hoses hot to touch as mentioned earlier, then have it tested for combustion gases in the cooling system.
Wednesday, April 1st, 2009 AT 12:54 AM