Join Date: Jun 2016
Location: beautiful Bucks county PA
I suggest you focus on the t-stat and how it works with your manifold. There is a recirculating feature when the engine/coolant is cold. When cold the t-star is closed but the recirculating valve (at the bottom of the t-stat) is open. That valve should close as the t-stat warms and allows coolant flow to the radiator. I think somehow that recirculating valve is not closing completely allowing hot coolant to return to the engine without visiting the radiator.