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Tom Wesenberg · 06-28-2017, 04:01 PM

I don't idle an engine more than necessary, and I always have my spark lever half way down at idle.

Idle speed should be about 475 RPM.

If you want to show how slow an engine can run, an old hit and miss is good for that.

06-28-2017, 04:01 PM	#4
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Idle speed I don't idle an engine more than necessary, and I always have my spark lever half way down at idle. Idle speed should be about 475 RPM. If you want to show how slow an engine can run, an old hit and miss is good for that.