Is the CDI on a scooter good or bad?
One advantages of the CDI is that they are not sensitive to shunt resistance. The CDI box, however, does not give enough ignition efficiency because its spark duration is short. Professional help. Every scooter owner or lover should know that CDI models are either AC or DC. These two types work differently.
Why does a CDI spark plug go bad?
It also directs the spark plugs on how to perform especially when they have to fire. The CDI goes bad because of different reasons. Some of them go bad because they are old, others experience a wiring short while others go bad because of a faulty charging system.
What happens when a CDI box goes bad?
Sometimes, a bad CDI does not cause sparks at all. Again, when a CDI box is about to go bad, it can lead to misfires, issues with starting, rough running or even stall the motor.
How can I tell if my CDI has a problem?
When the fuel pump has a problem, spark plugs or coil packs are faulty, you would observe similar symptoms. Therefore, the only way you can tell whether your CDI has a problem is by confirming that everything else is in the right condition. The reason is that there is no particular way of testing the condition of the CDI.
What causes a dying coil on a riding mower?
The symptoms you describe are classic “dying coil” symptoms. You can disconnect the kill wire from the ignition coil and check for spark to be sure. If you get spark then you have a wiring issue or one of the safety/ignition switches is at fault.
What to do if the CARB doesn’t come out?
If you have the carb out, maybe try spraying a little starting fluid into the combustion chamber (not much) and see if it trys to kick over. If it doesn’t, it could be the CDI module or coil. If it does it’s probably not getting fuel past the carb.
What is the default CDI limiter on a Bonneville?
Procom CDI Limiter is set to “Default.” I just realized that I never updated this post after completing my Mikuni carb modification. With the Bonneville Performance Mikuni Carb Kit installed on my setup, I changed my Procom CDI map to #9 which seems to work the best.
Why is my drz400 bike not starting?
Had the same problem with my DRZ400S recently after checking/adjusting the valve clearances. I’d not removed the carb, only rotated it in it’s rubber mount. I too got low compresion readings & as I’d never been happy with the plug thread, I removed the head expecting to find tangled valves but all was well.