40hp Suzuki outboard with a spli ignition coil. I am getting fire to the bottom cylinder but not the top. Can the CDI send power to one coil and not the other.?

Yes, a CDI (Capacitor Discharge Ignition) system can potentially send power to one coil while failing to send power to another. If you're getting spark in the bottom cylinder but not in the top, it could indicate a problem with the top coil, a faulty spark plug, a wiring issue, or a malfunction in the CDI unit itself. It's advisable to test the coil and wiring for continuity and ensure the CDI is functioning properly.