CDI Motorcycle Engine Specs

Written by jade blue
  • Share
  • Tweet
  • Share
  • Pin
  • Email
CDI Motorcycle Engine Specs
CDI motorcycle engines create high voltage in a short time span. (engine of a motorcycle image by terex from

Motorcycles, lawnmowers and aircraft use capacitive discharge ignitions. Motorcycles with CDI engines have an electronic ignition generating high voltage to power a spark plug in a short period of time. CDI technology replaces the point and condenser system previously used by motorcycle engines. Mechanics use the CDI box to assist with bike repair.


There are two types of CDI engines. Motorcycles use an alternating current CDI engine. The ignition generates power by gathering alternator energy. A CDI unit consists of one trigger coil, one source coil and one ignition coil along with a black box.


The coils of a CDI motorcycle engine amplify voltage 100 to 1. A charge of 250 volts sent through a CDI engine module is amplified to 25,000 volts when the system coils output the charge. The charge is powerful but short-lived, lasting 10 to 12 microseconds.


CDI motorcycle engines require minimal maintenance due to a lack of moving parts. When problems are detected, mechanics use an ohm meter to measure power output. Mechanics state the CDI system provides a more accurate method of power output than the previous point and condenser motorcycle ignition system.


CDI motorcycle engines have a limited spark duration. Some motorcycle models experience a difficult cold start. Potential CDI engine problems, caused by intense engine heat, could cause a motorcycle engine to seize and fail. A failed CDI unit is very expensive to replace.

Don't Miss

  • All types
  • Articles
  • Slideshows
  • Videos
  • Most relevant
  • Most popular
  • Most recent

No articles available

No slideshows available

No videos available

By using the site, you consent to the use of cookies. For more information, please see our Cookie policy.