YS 1.20 FZ Question - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-21-2005, 01:18 AM   #1
Fox 22
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YS 1.20 FZ Question

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I have a YS 1.20 4 stroke engine that I purchased with a plane and have noticed a clicking or ticking sound as I rotate the prop by hand. I was told that this is normal and should go away when the engine reaches operating temperature but I had it running today and the mechanical clicking noise does not go away. This is my first 4 stroke engine and was wondering if this is a standard characteristic or do the valves need adjustment? Also, this engine uses a pressurized fuel system / fuel pump, and the noise seems to be originating in the crankcase near the fuel pump. It could also be the camshaft/pushrods though. The engine runs great and except for the noise everything seems normal. Is this negligable or could it be a sign of something more serious?

I don't know what we're YELLING ABOUT! ......... LOUD NOISES ! ! !
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