Author Topic: Top of piston has....  (Read 383 times)

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Offline Al Smith

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Re: Top of piston has....
« Reply #10 on: September 09, 2015, 05:27:19 am »
About the only saw engines I have found with high carbon build up are those the oiling system are open to the crankcase such as impulse operated McCullochs .That's because eventualy they all leak a little bit and suck chain oil into the cylinder.You can't totally burn chain oil .

As far as heavy mix ratios no kidding I've torn down old saws I know had been ran on 16 to one using motor oil and they were virtually carbon free .They had sat on a barn floor for 30 years to boot .

 

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