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Non-FE Discussion Forum / Re: 2009 Ford Fusion overheating help needed.
« on: February 01, 2022, 12:13:41 PM »
I'm with Heo and Stangman on the slight compression leak. We bought an '11 Escape new and were introduced into the world of potential 2.3 problems when I began to inquire as to why the engine became mechanically noisy at idle by the time we had 15,000 miles on it.
Per some friends I've known for decades at my local Ford garage these engine blocks have a habit of developing minute cracks between cylinders 2 and 3. If the crack migrates up to an insignificant spot at the head gasket and head interface then it'll keep going strong (albeit noisy). If the crack migrates elsewhere you get compression loss into the cooling system which of course results in overheating and coolant loss. No idea how the noise lines up with this issue, but the potential cracking between 2 & 3 is common and real.
Per some friends I've known for decades at my local Ford garage these engine blocks have a habit of developing minute cracks between cylinders 2 and 3. If the crack migrates up to an insignificant spot at the head gasket and head interface then it'll keep going strong (albeit noisy). If the crack migrates elsewhere you get compression loss into the cooling system which of course results in overheating and coolant loss. No idea how the noise lines up with this issue, but the potential cracking between 2 & 3 is common and real.