I have a 2004 20hp with electric start and trim, last year I didn't really use the boat but a couple of times and this year I was having to use starter fluid to get it started. I changed the plugs and oil but was still having to use starter fluid to get it started, once started it ran and started back up fine. A few weeks ago, I was out on the river and the motor just stopped, no coughing sputtering or knocking, it just died. The motor would turn over but wasn't firing or even tried to for that matter and had to be towed back in. I'm still having this same problem, any suggestions on what might be wrong would be great!