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Turbocharger oil leak

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ikaros61

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Hello everyone. So I have been having an oil leak around my turbocharger in my Arrow and after consulting my mechanic I was told the cause might be the return oil check valve not working properly and causing pressure in the turbo making it leak. Does anyone have any experience with this that can share? Picture of the valve is below. $1,400 from Aircraft Spruce😞
 

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