RCU Forums - YS140FZ Surging

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Ian-RCU

02-18-2003 02:57 AM

YS140FZ Surging

YS140 it is five years old and this is the first time it has been run. I am using 20% oil Klotz, 15% nitro an OS F plug. The engine starts ok but keeps on surging or hunting. It did have the new style gasket installed, any ideas?? would be appreciated.
Thanks Ian

Dave Shadel

02-18-2003 03:31 PM

YS140FZ Surging

It sounds like the engine need to have the gas porting modification to the piston. It will have to come into our service dept to have this done.

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