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Old 08-02-2013, 07:23 PM
Gen1dak Gen1dak is offline
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Same thoughts here. The line is still intact enough to handle daily chores, but once shut off, the heat and pressure initially increase and the overpressure is seeming through the weakened area. So, next time you run and it's good and hot, shut down and pop the hood. Give it a minute and you'll hear bubbling as the coolant boils in areas. Pressure will build and you may be able to see it emitting a fine mist or small droplets from somewhere in the line.
Otherwise, I'd suspect a weeping freeze plug.
As for the head gasket, a leak that small wouldn't show in the oil most likely, or in any other way at this point. What little coolant that may be escaping is just burning off.

Last edited by Gen1dak; 08-02-2013 at 07:26 PM.
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