i would appreciate any input some of my fellow boaters might have. i have twin 4.3 liter 220 mercruiser motors and the port motor won't start up. when the key is turned there is a steady humming noise. its not a clicking noise so i don't assume starter? i have tried troubleshooting it myself with the busy time of year and nobody being able to come work on the motor. i've checked the batteries, the battery terminals, connections to the celanoid (sp?), and have cleaned them all up thinking it might have been corrosion or so. none of that worked to this point. <br /><br />could it be something in the ignition wiring?<br />starter? celanoid? batteries? etc?<br /><br />i am really stuck here with the busy time of year and no one doing out calls for repairs in my area. i'm getting ready to pull it out for the winter, but i really don't want to. there is still some quality fishing left to do!!!! i would appreciate any information someone could offer or know anyone that works on these type of motors on the side in the cape may, new jersey area? <br /><br />thanks!