Title: Perform exhaust system back-pressure test; determine needed action.
Course: Automotive Technology III (20104-III) > Section: Engine Performance: Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair

Procedure should include conducting tests, using

- vacuum gauge
- fuel pressure gauge/back pressure gauge
- oxygen (O_2) sensor or air pump
- DMM with pressure transducers.

ASE Education Foundation
2017 Automobile Service Technology (AST) Level
VIII. Engine Performance
D. Fuel, Air Induction, and Exhaust Systems Diagnosis and Repair
Task 10

Process/Skill Questions:

- What performance problems might be caused by a restricted exhaust?
- What DTC could be prompted by a restricted exhaust?
- What problems might be caused by low exhaust back pressure?