Want my engine to start for Christmas

Are you pulling a plug, hooking it up to the plug wire, and watching the spark across the plug gap? If so, that is in no way, shape, or form a valid test. It takes many times more spark voltage to jump that small plug gap in a compressed fuel air mixture than in open air. So you can observe a weak spark across a plug gap in open air that will never fire a cylinder in actual operation.

So if this is the test you are doing, then you don't yet know anything about if you have a good spark or not.
Thats where Im coming from, It was running before, i tore it down but i discovered strange burns between coil wire and cap, the spark is there at the plug but, i think its not as bright as it used to be, and i was grounding the plug to look at the spark,like you u mentioned