Hello everybody, thanks for letting me join this forum. I have been working on getting my CB125 B6 running better with no luck!
It fouls the plugs. I had it rebored with new pistons but no improvement.
I bought another set of used carbs and a used 6volts ignition coil. I can not keep it running on both cylinders.
If it runs on one cylinder and the other starts to fire the first will stop firing. Both plugs look equally black. I have checked spark with a nail in the plug cap and it will spark about 5mm. I have only tested one side at a time.
Today I tried lifting the cap from the left plug a bit and it started to fire on that cylinder. If the left cap was lifted more it would continue running on the right cylinder. Shouldn't it had stopped? Could it be crossfiring inside the coil or outside somewhere? Should I suspect both coils to be faulty?
It fouls the plugs. I had it rebored with new pistons but no improvement.
I bought another set of used carbs and a used 6volts ignition coil. I can not keep it running on both cylinders.
If it runs on one cylinder and the other starts to fire the first will stop firing. Both plugs look equally black. I have checked spark with a nail in the plug cap and it will spark about 5mm. I have only tested one side at a time.
Today I tried lifting the cap from the left plug a bit and it started to fire on that cylinder. If the left cap was lifted more it would continue running on the right cylinder. Shouldn't it had stopped? Could it be crossfiring inside the coil or outside somewhere? Should I suspect both coils to be faulty?