hello i`m a first timer at this so here goes. i have a onan 4kw generator that hasn`t run in a couple years. i am getting no spark to the plugs the caps test ok but i don`t know about the coil the gen. is a twin cyl onan eng. how can i test the coil or if any one has had the same problem how did you correct it. the coil has to spark plug towers. thank in advance