Title: Inspect the fuel transfer (lift) pump, pump drives, screens, fuel/water separators and indicators, filters, heaters, coolers, engine control module (ECM) cooling plates, and mounting hardware.
Course: Diesel Equipment Technology III (20107-III) > Section: Diesel Engines: Servicing the Fuel Supply System

Inspection should include

- checking the fuel pressure with a scan tool, according to manufacturer guidelines
- draining the water separator and checking for leaks
- checking the connections on the fuel heater base for coolant leaks
- cleaning the ECM of oil and debris to aid in cooling the electronics
- tightening all hardware
- determining any additional needed action.

ASE 3: I. Diesel Engines: G. Fuel System (P-1)

Process/Skill Questions:

- What happens if the water separator is not drained regularly?
- What is the purpose of a fuel oil heater?
- What liquid is used to cool the ECM?