05-04-2020, 11:24 PM
Kong, they are not solenoids, they are coils, or ignition coils. A solenoid is a device similar to, but not the same as, a relay. Google for more info if interested.
If you put plug wire 3 on spark plug 4 you will have the cylinder firing out of time. You know, not on the compression stroke. I would not do that. You could swap the coils and wires accordingly and see if the noise moves.
On our bikes, the system uses what is known as waste spark. In other words, when the number 1 cylinder fires on the compression stroke, the 4 fires on the exhaust stroke at the same time. That one is the waste. And vice versa. Same with cylinders 2 and 3. That's why we only have 2 coils instead of 4. One coil for 1 and 4 and one coil for 2 and 3.
There are others here that know a lot more about this than me. Hopefully PD or Sportsterdoc will chip in.
If you put plug wire 3 on spark plug 4 you will have the cylinder firing out of time. You know, not on the compression stroke. I would not do that. You could swap the coils and wires accordingly and see if the noise moves.
On our bikes, the system uses what is known as waste spark. In other words, when the number 1 cylinder fires on the compression stroke, the 4 fires on the exhaust stroke at the same time. That one is the waste. And vice versa. Same with cylinders 2 and 3. That's why we only have 2 coils instead of 4. One coil for 1 and 4 and one coil for 2 and 3.
There are others here that know a lot more about this than me. Hopefully PD or Sportsterdoc will chip in.