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Enduro Engine 4 stroke (including EFI & Exhaust) 4 stroke engine, EFI, and exhaust discussion


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Old 12-10-2020, 01:47 AM
kasparsL kasparsL is offline
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Default FSE450 2005 crank case brether

Hello, I hope to get some information from knowledgeable users. crankshaft breathing tube makes strange noises "flushing toilet" when engine is turning, but not when running. And also leaks oin when in high revs. Is there problem with the piston rings?
the bike starts fine, runs great, no knocking noise, only the pressure in case

you can hear the sound when i turn engine and stop. in this video
https://youtu.be/aQwoOvgYG1I


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Old 12-10-2020, 08:37 PM
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Gasser Nate Gasser Nate is offline
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There was a recall/modified breather tube when they were new. I don?t have the info on it anymore though. I would get a leak down test done to see the condition of the rings and go from there.
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