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I just re-read your reply, if the coolant is still going down ( even at slower rate ) you still have a problem. My replacement engine is still at the correct coolant level, then again it only has 350 miles on it......decisions decisions on whether to keep my Escape.
I agree I suspect I still have a problem and may need a second replacement engine. Your question about Liners, suggest you google open block design like "ralph7up" suggested above. The old school way is individual steel liners in each aluminum bore but the Escape has an open block design. All 4 bores are in a block of steel which is installed in a large cavity (open block). It's the design of the liner block of steel and the way it is sealed to the aluminum block and to the head that are the problem areas. The design issue, Ford claims, has been addressed and cracking in the liner walls between cylinders may be cured now. The sealing issues still remain in my mind. I have been a long time Ford owner, 17+ year old Ford Explorer, plus another Explorer, a Focus, and a Mustang but this Escape may well be my last Ford.
 

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I agree I suspect I still have a problem and may need a second replacement engine. Your question about Liners, suggest you google open block design like "ralph7up" suggested above. The old school way is individual steel liners in each aluminum bore but the Escape has an open block design. All 4 bores are in a block of steel which is installed in a large cavity (open block). It's the design of the liner block of steel and the way it is sealed to the aluminum block and to the head that are the problem areas. The design issue, Ford claims, has been addressed and cracking in the liner walls between cylinders may be cured now. The sealing issues still remain in my mind. I have been a long time Ford owner, 17+ year old Ford Explorer, plus another Explorer, a Focus, and a Mustang but this Escape may well be my last Ford.
I'm familiar with the open vs closed block engines, in my opinion open sucks. I think you needed a new head after the short block was already installed, maybe they didn't use a new head gasket when they replaced the head......isn't there an improved head gasket available now? Just a guess but I doubt it's the block again, I think something wasn't done correctly. Keep us posted on what you find out.
 

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I'm familiar with the open vs closed block engines, in my opinion open sucks. I think you needed a new head after the short block was already installed, maybe they didn't use a new head gasket when they replaced the head......isn't there an improved head gasket available now? Just a guess but I doubt it's the block again, I think something wasn't done correctly. Keep us posted on what you find out.
My car had a new head and a new gasket so we'll see what happens over the next few hundred miles.
 

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I know this is not Focus related thread, but i want to share similar problem i encountered.
Ford Focus 2017 1.5 ecoboost 4 cylinders started loosing coolant at 23 000 km.
The dealer performed three pressure tests.
Last one was performed today (35 000 km)....engine internal leak in cylinder no. 2 was seen on borescope.
Internal engine inspection will be performed next week.
More and more 1.5 ecoboost (4 cylinders) engines develope this issue.
It seems (from what i read on other forums) that repairs don't last and the issue develops again.
 

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I know this is not Focus related thread, but i want to share similar problem i encountered.
Ford Focus 2017 1.5 ecoboost 4 cylinders started loosing coolant at 23 000 km.
The dealer performed three pressure tests.
Last one was performed today (35 000 km)....engine internal leak in cylinder no. 2 was seen on borescope.
Internal engine inspection will be performed next week.
More and more 1.5 ecoboost (4 cylinders) engines develope this issue.
It seems (from what i read on other forums) that repairs don't last and the issue develops again.
ave not read anything definitive on fixes don’t last but many discussions on this board on the various fixes and also the design of the engine.
 
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