What causes coolant to blow out of overflow tank?
What causes coolant to blow out of overflow tank? It could be a gasket, it could be a cracked head, or worse, a cracked block. It is most likely a gasket, but the only way to find out is to pull the heads (they gotta come off anyway). yank the engine and get it apart. The likelyhood that the 1 or 2 cylinder has blown to water are great. What causes a car engine to blow to water? It is most likely a gasket, but the only way to find out is to pull the heads (they gotta come off...