Our website is best viewed in Firefox 3.6-5.0, Internet Explorer 7-8, and Google Chrome.

Please note that your browser is , version

For the best viewing experience, you can update your browser here or download one of the following:

Skip to navigation Skip to content

Technician Guides

General Troubleshooting

Engine Brake Trouble?

Well, try this!

Click here for Jake Brake® Troubleshooting Information.
Note: File is 2.4MB and is applicable to engine brakes made from 1961 to approximately 1997
(ECM implementation varies with manufacturer).

For engine brake electrical troubleshooting on engines with ECM's, refer to your engine service manual.  This manual does not apply to exhaust brakes.

Detroit Troubleshooting

Service Locations

The Jacobs Engine Brake® and Jacobs Exhaust Brake® products are sold and serviced through engine manufacturers worldwide. Locate a dealer in your area.


Have a Question?

Have you looked at our Frequently Asked Questions? While we would like to hear from you, it is possible that your question can be answered more quickly if you visit our FAQs.


Contact Us

Connect With Us

Back to Top