318 no spark??

This may be silly but - when you changed the coil, did you put the wires on the right sides?
Something to check - take the dizzy cap off, rotate the motor so the points are closed, turn the ignition on and with an insulated screw driver (or similar) us it to slowly open the points (not at the tip) and see if it has a spark shoot across - easier to see if it is in a darker area. This will at least tell you if you have power problems at the points or if the points are dirty. No spark - Ignition OFF - get a CLEAN rag and wipe the contact surfaces of the points - if your feeler guages were not 100% clean, she won't transfer spark either. Try this.