Thank you for answering. I've had this boat/motor for almost 30 years and have done nothing to it but run the carbs empty at end of season and start the next season with fresh gas. Changed the spark plugs one, it just hasnt needed anything. I'm aware of the 2+2 but never understood how it actually worked until recently (working on it). That's what has me convinced it is ignition, it is only hitting on cyl #3 instead of 1-2 that have the low speed jets. I can get it to 2500 RPM just on cyl #3 and give a shot of starting fluid into the other 3 carbs with it running with no effect. I just don't know how to trouble shoot CDI module/stator/trigger, to know where to start with part replacement. Perhaps the manual ink you gave me may give some insight. Thanks again for a boost in the right direction. It started doing it last season where it would only run on 2 cyls on open water at wide open for 2 maybe 5 minutes then pick up the other 2 and run fine for the w/end. I'm leaning towards CDI? any thoughts?
