I have a 1994 inboard Sportjet 90hp Mercury engine. It ran all last year during the boating season. I then had it sit during winter inside a heated garage at approximately 50 degrees. I put new gas in the tank, hit the primer bulb and it was solid. I then replaced it thinking no gas was getting to engine. New primer got me gas, but this time it flooded out the carbs after it would not start. A friend of mine checked it out and found out there is no spark to any of the plugs (3). I checked all fuses that I could and no fuse was blown. I am wondering what issue persists if anyone has an idea and can help. It does sit and crank over and over, just drains the battery. Like I said it worked perfect until I parked it for the winter. I also put fuel gas additives to have the carbs and gas be ok for storage. Thanks for your help! 