I went through the tests below and had no issues. Was able to get get spark at the 2&3 plugs using test 5 below. But when I turn the starter over, no spark at plug. Any ideas where to look next?
1- Disconnect both the Yellow and Blue wire at the coil.
2- Check Black wire TO the coils with the key on. Red probe on Black. Black probe on a green wire or engine case where there is no paint.
If you don't have Battery potential (12V) or very close to it (do a compare to that at the battery terminals), the coils and ignition can't work.
Then fix the problem here. Otherwise...
3- Reconnect the Black wires to the coils. Now measure the disconnected Yellow and Blue wires each with the red meter probe and the Black probe on a green wire or engine case where there is no paint.
Again you should have Battery potential (12V) or very close to it. If not, and you had voltage at the Black wire on the previous test, the coil(s) is bad.
4- Next lay #4 connected spark plug on the motor or wherever the spark plug body can touch a battery return path (engine, frame, Green wires, etc.) With an extra wire, used as a temporary jumper, bridge the Blue wire to engine, frame, Green wires, etc. Each time you remove the jumper, the spark plug should spark at the gap.
5- Next lay #3 connected spark plug on the motor or wherever the spark plug body can touch a battery return path (engine, frame, Green wires, etc.) With an extra wire, used as a temporary jumper, bridge the Yellow wire to engine, frame, Green wires, etc. Each time you remove the jumper, the spark plug should spark at the gap.
