Re: Evinrude 20. Is this noise a problem?

[jerry-ahrens]

I believe I hear the noise you are referring too. My 35 does that too. I believe you are hearing some piston slap noise. Yours sounds like it has more than mine does though, maybe due to a lot of hours running 100/1mix? Try taking it for a ride to warm it up good, then try idling it down and see if that noise is less noticeable. Personally I’ve seen some of those that are pretty noisy.
You should absolutely run 50/1 in that motor, as already stated.