Took my boat out for the first time after a new coil. I also pumped the bulb for the first time before starting. I could tell an immediate difference in this motor. It only has 16 hours on it but always ran rough until I gave it gas and it would then run fine then later would not go over 1200 rpms. Anyway, all seems better now after the coil replacement and it sounds much better. I must have had a bad coil from the beginning and it kept getting worse.