Yes, the carbon can burn out of the steel causing poor sparking. Looks great to the eye but under compression it fails.
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My Jonsered manual (920) calls for 85 or betterJW IN VA wrote: ↑Thu Aug 29, 2019 7:07 pmI usually forget to turn the gas off on mine but that Honda 160 is a great engine.I have two.One on a mower and the other on a power washer.
My mower has the auto choke that decides when to cut back.It started running rough this year surging as it was mowing along.A little seafoam in the gas and no more surging.Runs like new.
Never use ethanol in any of my small engines.Although my Stihls call for 89 octane,I feel I'm better off with my 87 and no ethanol.
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I've have the same IR/Honda wheelbarrow compressor and it is acting like your unit. I've gone thru the carb and nozzle with same results that you have. Please post up your fix. I guess new fuel line is next for me.
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I have a GCV160 on my wood splitter. It's always been cranky, needs to run on 1/2 choke for about 10 minutes until it warms up because it's jetted so lean.