Portland Community College | Portland, Oregon

This course is designed for students with no previous industry experience. Students will develop the skills, knowledge and attitudes necessary to perform, with limited supervision, the appropriate procedures involved in engine maintenance, problem diagnosis, repair and adjustments on cars, pickups and vans. This course will prepare students for the capstone course series which provide the opportunity to practice learned skills on customer and school controlled vehicles in a “live shop” setting. This will begin the skill level necessary for employment at an apprentice level.

The course material will be presented in a lecture/laboratory format and include videos, handouts and hands-on lab experience in the shop. Students are required to read assigned materials, take notes, complete homework assignments and research information in service manuals and with electronic service information systems.

• Perform engine performance inspection, maintenance, diagnosis and repairs relating to fuel control systems.
• Access and utilize repair information in a rapidly changing technology.
• Develop and implement strategies and processes to solve engine performance problems relating to fuel control systems.
• Perform engine performance repair of fuel control systems to professional and ethical standards.

Students will demonstrate effective work with fellow technicians in the following ways:

• Attendance requirements include penalties for excessive days missed and lates.
• Lecture participation requirements include bringing textbooks to class, being prepared to take notes and remaining attentive in class.
• Laboratory participation requirements include demonstrating good craftsmanship, using time wisely, treating equipment properly, using procedures properly, demonstrating acquired skills and correct use of tools.
• Demonstrate preparedness for ASE testing by achieving a passing score on all written exams and completing homework assignments.
• Successful completion of laboratory work in the following areas:.
  • The different types of fuel injection systems.
  • The purpose, operation and testing procedures for fuel injectors.
  • Deposit formation and solutions.
  • Fuel delivery systems.
  • On Board Diagnostic (OBD 1 and 2) interpretation including such areas as code retrieval, readiness monitors, data link connector testing and network diagnosis.
  • Input sensors and Idle control systems.
     

•Discuss the history of fuel injection systems, characteristics of fuel injection and the modes of operation.
•Define and discuss fuel injectors (outputs).
•Discuss fuel injection service: injector testing, cleaning and repair, idle control systems.
•Define and discuss injector deposits, throttle body deposits, intake valve deposits, and combustion chamber deposits.
•Discuss the fuel delivery process. (Fuel pump, lines, filter, fuel rail, pressure regulation).
•Define and discuss On Board Diagnostic systems (OBD 1 and 2).
•Define and discuss input sensors:

• Throttle Position

• Manifold Absolute Pressure and Mass Air Flow

• Engine Coolant and Intake Air Temperature 

• Oxygen (HO2S)

•Understand how fuel injection system operate for diagnosis, testing and repair purposes.
•Understand the difference between throttle body, muli-point and sequential injection systems for diagnosis.
•Understand the operation of fuel injectors for diagnosis.
•Perform correct service, testing and replacement procedures.
•Diagnose driveability complaints and make appropriate repairs.
•Understand the operation of the fuel delivery system for diagnosis, service and repair.
•Evaluate DTC’s and make repairs.
•Understand operation for diagnosis and repair.
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