My dad and I are working on this 1977 solo odyssey which has no spark. We grounded the positive lead to the coil (the one which is unplugged in the picture) to the cylinder head and tested that for spark rather than the spark plug, and it did create spark so we diagnosed that the coil was bad. Well now we have a new coil and still no spark. We are using the old spark plug wire. Any ideas what is wrong?
