Hey guys I have a 1974 or 76. I can't remember at the moment. Mercury 4.5 hp motor. But it's SUPER clean. I've been running It for about three years now no problems at all. How ever the other day I was out and after moving around a bit stopping / starting. I shut it off for about 30 min. When I started it was almost sounded like it was missing. It ran for a min then shut off. Tryed it again same thing. Started it again and went wot. Soon as it got revved it ran like normal but as soon as I throttled down it started to Mis again. I cleaned the carb/ fuel pump. Checked the plug it's 3 yrs old but still looks great. Checked the grounds. I don't know if its the coil or how to even check it. Any ideas?? Thanks.