I just purchased a 1996 boat and everything is original. I have replace the cap & rotor, plugs, plug wires, iginition coil, set valves, verified the injectors work, set timing, etc. The problem is when I get on the water and give it gas the thing will shut-off at 3000 rpm's and drop very low and then kick back in. If you let of the gas and run it at around 2800-3000 you are fine. I have diconnect the temp cut-out, stern oil switch, and jumpered the rev. safe switch also. It just seems like the ignition just shuts-off and then kicks back on.