Greetings, I have a few questions. My outboard 1994 Suzuki 2 cycle 9.9hp two cylinder CDI unit is dead. I have looked at the waveforms from the coils under the flywheel, magneto, charging and the two pickup coils all have healthy outputs. Very little input to the coils that drive the spark plugs. I want to build the circuits, IGBT and charging cap, and get the motor running again. My questions are these:
The waveform from the two pickup coils have a leading negative going pulse followed by a positive going pulse. Which edge do I use to fire the IGBT? Also the plate that holds all the coils under the flywheel rotates with throttle movement. This is some sort of mechanically coupled timing advance. Would I need some sort of electronic control of spark timing in addition to the mechanical one?
Thanks in advance.