Im having problems with my 150 yamaha and i can not figure what is wrong with it. The rpms will start jumping between 2100 and 2500 rpms the alarms will start going off. Ill put the boat in neutral and it stops and the boat will run fine for the rest of the day. Sometimes this will go on for an hour. It always seems to stop and the boat will run fine. Im leaning towards having to replace the cdi unit but iwanted to see firts if anyone else has ever had a similiar problem and how they fixed before i go ahead and replace it.