Need some help yamaha 115 yr 2000 oil injection wants to run rich. Have had Dealer do sink and link they says everything is fine. I do a lot of cold water fishing in south dakota and have to wait a while at the ramp idling to load out what can I do to fix this problem. The dealer did indicate the plugs show burning rich. Will a hotter burning spark plug help. Any ideas. I use high octane gas 91.
