Title: Inspect test, and/or replace fuel injectors.
Course: Automotive Technology III (20104-III) > Section: ENGINE PERFORMANCE: Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair

Procedure should include performing the following tests:

- Coil resistance test (ohmmeter)
- Flow test
- Oscilloscope signature test, checking for leaking nozzle and for presence of contaminated oil

Process/Skill Questions:

- What specialized tools may be necessary to test fuel injectors?
- What noise does an operating fuel injector make?
- Why is it important to identify fuel injector impedance before deciding to replace it?
- Why do fuel injectors have different colored electrical connections?