Title: Check the engine exhaust system for leaks, proper routing, and damaged or missing components to include exhaust gas recirculation (EGR) system and after-treatment devices, if equipped.
Course: Diesel Equipment Technology I (20107-I) > Section: Preventive Maintenance and Inspection: Servicing the Air Induction and Exhaust System

Checking should include a visual inspection to look for

- exhaust gas leaks with smoke machine
- interference issues between the exhaust system and the cab or chassis
- leaks or loose fittings on the EGR
- problems with wires, hoses, and fittings on the after-treatment system

and recording the findings.

ASE 1: I. Diesel Engines: I. Emission Control (P-1)

Process/Skill Questions:

- What is the purpose of the EGR system?
- What can cause leaks or loose fittings on the EGR?