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Reply to "Waterpump plug ?"

If the re-circ bypass is plugged, does water circulate at all within the engine and heads prior to the opening of the thermostat? Seems there would be hot spots, maybe even local boiling (heads), and cooler/cold spots (down low in the block) until the t-stat opens and the water pump actually has a place to move the coolant to. Doesn't seem to support an even rise to operating temperature.
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