Coolant leak
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Junior User
Joined: Mar 2005
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Coolant leak
I'm open to any ideas here. On my 91 7.3 I've got a coolant leak that's dumping coolant into the valley pan. It only does when I'm driving as best as I can tell. When I'm at idle it won't leak. There is no white smoke at startup and no coolant in the oil or vice versa. Truck runs fine, it's just leaking coolant. Doesn't seem like a head gasket issue. Could this be a cracked head? Or is it something easy like bad thermostat gasket? I'm pretty new to these engines so any help would be great. Thanks
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