OK, well laying the plug against the block and looking for spark is not the most accurate way to test. Usually most OMCs with universal magnetos should be able to jump a 1/4″ air gap. So, if you were to report that the spark jumped a 1/4″ air gap, then I would be more inclined to say that spark is not your issue. But, just because it jumps the small spark plug gap does not guarantee it is doing that inside the combustion chamber under compression.
So, the engine doesn’t even pop, or try to fire? Are you sure you have the wires on the right plug, easy to mix that up. How about if you prime the cylinders through the plug holes with some fresh fuel/oil mix, then try cranking it…
