I have a 79 Chrysler 115 I recently bought, took it out on the lake today and it fire right up and as I was letting it warm up it shut off and would not fire. I found that I lost spark but it still will spark a little as soon as I let off the key. Where should I even start with this outboard motors are completely new to me. I pulled the flywheel and cleaned the magnets and stator up but im lost after that didn't work.