How do you bypass a CDI box?

Follow the following directions to effectively bypass your CDI box by carrying out an ignition coil resistance test (“bench test”).

Clear Your Bench.
Remove the CDI Box.
Check the Resistance Specifications.
Measure the Primary Coil Resistance.
Measure the Secondary Coil Resistance.
Compare the Readings.

What does a CDI box do on a 2 stroke?

A CDI box works via the voltage from your motorcycle battery, and the electrical load discharges in one operation, starting the ignition and combustion processes. The capacitor can ignite without a battery connection, and there’s a built-in capacitor for kick-starting.

How do you test a CDI box on a motorcycle?

You might as well use the oscilloscope in carrying out more complex test; however, very few individuals have access to this device. Under the seat of your motorcycle, you will find a connector with a blue and white wire coming straight from the stator and going to the CDI box.

Where is the multimeter on a CDI box?

However, when the resistances of the wires are within the recommended spec, you should reconnect the blue and white connectors. You will find a yellow, white and black with white-stripe cables coming from your CDI box heading towards the front of your bike. Ensure you multimeter read DC volts and it is set within the range of 250.

Why do I need to test my CDI box?

If your bike fails to stop immediately, the chances of your CDI box being faulty are high. CDI is like a computer, and it helps control your motorbike; therefore knowing whether it is faulty or not is essential. Since it controls fuel injector and sparks plugs, CDI is responsible for making your motorbike operate accordingly.

Can a faulty CDI box cause a misfire?

Diagnosing CDI is not that easy since the faulty symptoms which are observable on your CDI box might lead to a different direction. At times a faulty CDI may fail to cause a spark at all. Furthermore, when a CDI box is about to become defective, it will lead to misfires, rough running, and ignition problems as well as stall the motor.

When did the yz85x owner’s manual come out?

EAU10192 YZ85X OWNER’S MANUAL ©2007 by Yamaha Motor Corporation, U.S.A. 1st edition, April 2007 All rights reserved. Any reprinting or unauthorized use without the written permission of Yamaha Motor Corporation, U.S.A. is expressly prohibited. Printed in Japan.

What makes a Yamaha yz85x a good bike?

Congratulations on your purchase of the Yamaha YZ85X. This model is the result of Yamaha’s vast experience in the pro- duction of fine sporting, touring, and pacesetting racing machines. It represents the high degree of craftsmanship and reli- ability that have made Yamaha a leader in these fields.

Is there any way to test a CDI box?

The only real way to test your CDI box is to swap it out with another known good unit from the same year/make/model. Because of this, we recommend that you rule everything else out before replacing the CDI box. There are so many factors that can cause a CDI box to go out, which is why it’s the only product that we sell without a warranty.

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