Corrosion problems in cylinderwalls with Yamaha F300 2017- common?

[hasse]

Hi there

I have a question for you guys. Im looking to buy a boat with Yamahas F300 2017-. And due to bigger issues since before i bought an inspection camera (teslong) to verify the condition on every engine im intrested in.
So i have checked 3 engines who do have between 100-200 hours on them and service is made by authorized workshops. All of them have corrosion on the cylinder walls, some more some less. But are those engines only wrongly winter preserved with no oil in the cylinders or do Yamaha have a corrosion issue with those engines?

Im not intrested in any of those engines at all but am i wrong? Is this normal? Pictures from 2 engines. Do i need to buy a new boat? I usally keeps my boat round about 7-8 years, so i dont want to rebuild an engine that have a few hours on it?

Kind regards Hasse

 

[boscoe]

The cylinder walls of the 4.2 liter F300's are flame sprayed. I am wondering if that is what you are seeing.

I have never heard of corroded cylinder walls being a particular problem

 

[guyjg]

Used alcohol-based 90/10 fuel? Did not fog cylinders at storage? Go to a dealer and talk to a technician.