Your CDI has two plugs, a 4-pin and a 2-pin. The 4-pin side may have 3 or 4 wires connected to it (both AC and DC versions). If the 2-pin connector has only 1 wire going to it, it’s a DC CDI. If there are 2 wires attached to the 2-pin connector, then it’s an AC CDI.
Turn the scooter key to the “On” position and, using a test meter or test light, check if there is current at the CDI. If there is 12 V at the CDI it is a DC CDI, if there is no voltage at the CDI it is an AC CDI.
Secondly, is my moped AC or DC? To find out if your scooter is AC or DC is real easy. If you turn the key on and your headlights come on, your scooter is DC, if you have to start your scooter and have it running to get your Headlights to come on your scooter is AC.
In respect to this, what is AC CDI and DC CDI?
The AC–CDI ignition system is the most common CDI in small engines. The module gets its power solely from the alternator in form of alternating current. DC–CDI. This kind of CDI is powered by a battery. The system comes with a DC/AC inverter circuit to raise the voltage from the 12V DC up to 400-600 V DC.
What is a DC CDI ignition?
A Capacitor Discharge Ignition is an electronic ignition device that stores an electrical charge and then discharges it through an ignition coil in order to produce a powerful spark from the spark plugs in a petrol engine.
What does a CDI do?
A CDI or capacitor discharge ignition that is found on most bikes is linked to the ignition where it mainly stores the electrical charge. It is responsible for increasing the spark’s power in the spark plug. CDI box can be found only on vehicles that are based on the gasoline engine.
Can a bike run without a CDI?
Yes, you can with a mechanical unit. But customizing one will take lots of time and effort. It might be even more costly to custom build one as the CDI on the market shelf is mass produced one hence efficiently produced. That will keep it’s price reasonably low.
How do you test a CDI box?
Use your multimeter to check for resistance. It should read in the thousands for Ohms. If your plug wires and caps check out, you can now test your ignition coil. First measure the resistance between the primary wire that comes from the CDI box and the ground or ground wire.
How much does a CDI box cost?
CDI Box Replacement Costs CDI boxes range from $30 to well over $900, depending on the brand, features, and make and model of your bike. Consider repair costs as well, including the per-hour shop rate at your mechanic’s.
Can you bypass a CDI box?
A capacitor discharge ignition box (CDI) box is used in motorcycles, turbine-powered aircraft, outboard motors, and some cars. You can temporarily bypass a CDI box for troubleshooting purposes. Thus, it’s unable to store enough voltage to keep the engine running.
What makes a CDI box spoil?
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 is a gy6 scooter?
From Wikipedia, the free encyclopedia. The GY6 engine design is a four-stroke single-cylinder in a near horizontal orientation that is used on a number of small motorcycles or scooters made in Taiwan, China, and other southeast Asian countries. It is believed to have originally been a Honda design.
Does CDI ignition need battery?
CDI ignition: Due to its ability to start a motorcycle without a battery most of the dirt bikes uses this ignition. A dirt bike has no lights or horn whatsoever so it does not require a battery to power these electricals.
How do I know if my CDI box is bad?
Troubleshooting CDI systems Symptoms could include misfiring, dead cylinders, backfiring, bizarre tach behavior, and countless other things related to how your engine’s running. The problem may get worse as the bike warms up. It might not even hold low revs at all.
Is a spark plug a capacitor?
A spark plug cap for use on a spark plug of an internal combustion engine to much intensify sparking across the gap between central and ground electrodes of the spark plug. At least one capacitor unit is supported within the insulating body and electrically connected across the gap between the spark plug electrodes.
Are all CDI boxes the same?
Because ignition characteristics (particularly timing) vary widely across vehicle models, there’s no one CDI box that can cover them all. The CDI must be matched to the engine that’s being worked on. The CDI boxes in these systems are not interchangeable.