Alright so my lude was having erratic rpms which cause the engine to shut off if they went to low. The engine shut off and has no come back on and is now not receiving spark it is getting fuel I can smell it and hear the fuel pump kick on. I have changed my spark plugs,wires,dizzy,coil,main relay and have tried another ecu. On the diagnostic the check engine light stays solid on both ECU so maybe they are both faulty or it's suppose to stay solid if there are no codes to be read. All of the grounds are tight and in correctly, I'm pretty stumped on what the problem can be that I'm getting zero spark to the external coil any advice?