How to Troubleshoot a Deutz F6l912

Written by erick kristian
  • Share
  • Tweet
  • Share
  • Pin
  • Email
How to Troubleshoot a Deutz F6l912
Deutz is a German company that is one of the largest manufacturers of diesel engines. (Jupiterimages/ Images)

The Deutz F6l912 is an all purpose six-cylinder 5.6-litre diesel engine. It is an industrial motor and can be used in a variety of applications. This rugged engine is designed for hard, long use and is made to last. However any engine is only as good as it is treated. Regular maintenance will not only increase performance and keep the engine running its best, but also spot issues before they become major concerns.

Skill level:


  1. 1

    Troubleshoot the engine if it is failing to start. First make sure there is fresh oil and the right type of fuel in it. Check the fuel pump. A broken fuel unit can cause the engine to fail to start. Check if the fuel filter is clogged with debris, and clean it out or replace it if necessary. If there is be air in the fuel system, the solution is to bleed the lines. Check the injector lines and see if they are blocked and clean if necessary.

  2. 2

    Check for performance issues. A number of issues could cause the engine to lose power or perform poorly. Inspect the tank vent to make sure that it is open. Check the connections on the fuel lines and injector lines and tighten, if necessary. Test the timing of the fuel pump and readjust if needed. If the injection nozzle is broken it must be replaced. Adjust the idle speed to a higher setting.

  3. 3

    Check for other issues: Test the glow plugs if the preheating system is defective. Check if the delivery valve is leaking, and if it is, replace it. Check the bumper spring and adjust if necessary. If the engine compression is low or uneven then it will need repair.

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.