May 25, 2026  
2025 - 2026 Eastern Iowa Community Colleges Catalog 
    
2025 - 2026 Eastern Iowa Community Colleges Catalog [ARCHIVED CATALOG]

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DSL 439 - Diesel Fuel Systems


Credit(s) 5.00
Lecture Hours: 2.25
Lab Hours: 5.50
This course acquaints the student with diesel fuel characteristics, fuel subsystems, overview of diesel fuel injection basics, and injector nozzles. It will also acquaint the student with operation, testing and adjustments required to troubleshoot and repair diesel fuel systems. The course is broken down into different modules and includes: Detroit Diesel Mechanical and Electronic Fuel System, Cummins Manuel Electronic Fuel Systems, Mack and Volvo Fuel Systems, Common Rail, and Emissions. 

SLOs:
Upon successful completion of this course, students will be able to:

  • Define terms used to describe diesel fuel.
  • Identify fuel subsystem components on a truck or bus chassis.
  • Describe the components used in a diesel engine fuel subsystem.
  • Understand the objectives of a fuel management system.
  • Define metering and its application in a fuel system.
  • Diagnose Caterpillar, Cummins, Detroit, Volvo and John Deere Fuel Systems.
  • Operate scan tools, for all engines.
  • Troubleshoot electronic engines.
  • Demonstrate proper way to repair electronic engine. 
  • Perform engine tune up on all makes. 



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