troutfanatic
Well-known member
I purchased a boat with a 1989 40 hp Evinrude motor. The boat is hard to get started and idles rough. It eventually quits in idle. Once you give it the gas it runs fine at any speed. It has new spark plugs and a new fuel filter. I read where you recommend B12. I thought that might be a start but wasn't sure if it would hurt a motor that old. Thanks for any help.