Doesn't sound like either one. Sounds more like the water pump itself or a core plug near it. Cracked blocks are REAL rare. A cracked cylinder head is more likely and even that is not common. Head gaskets, when they leak outside the engine, will leak rather slowly, and often not at all until pressure builds up in the cooling system. You're overlooking something less serious.
Friday, July 15th, 2011 AT 4:35 AM