My 2007 Mercury 90hp EFI engine has suddenly stopped running correctly, despite working great all weekend. Changed the oil 1 week prior, and had just refilled the gas tank after running all day. I still have 2 years on the warranty but wanted to troubleshoot this myself if possible.
* Starts...
Yesterday my boat ran fine all day and then just started to bog down between 2000-3000 RPM and the alarm would go off - I would immediately back off or shut down. It starts and idles fine, and it will go in gear and motor along at idle or up to almost 3000rpm; but any more throttle and it...
