Join Date: Feb 2014
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Coolant leak after thermostat change
I'd been noticing that my coolant temps weren't rising above 181 so I figured my thermostat was stuck open so I swapped it out. After starting it back up, once it hit operating temp I noticed coolant leaking. So I removed the new t-stat, checked the o ring and reinstalled it. Again, coolant started leaking at operating temps.
Frustrating as I ran out of time this evening to further troubleshoot. I checked closely around the thermostat housing but it doesn't seem to be leaking.
I'm wondering if the new thermostat, now that it creates a closed circuit, is now creating pressure causing a leak to develop elsewhere? Thoughts?