Fuel Pump Replacement - Detroit Diesel MBE 4000 DDEC VI Troubleshooting Manual

4.22

FUEL PUMP REPLACEMENT

4.22 FUEL PUMP REPLACEMENT

Perform the following steps for fuel pump replacement:
1. Replace the fuel pump: Refer to the MBE 4000 Service Manual (6SE420), Fuel System
Chapter.
To avoid injury before starting and running the engine,
ensure the vehicle is parked on a level surface, parking
brake is set, and the wheels are blocked.
2. Test the engine to determine if starting has been improved; refer to section 4.22.1.
4.22.1 Engine Test with Replaced Fuel Pump
To determine if the replaced fuel pump resolved starting difficulty, perform the following steps:
To avoid injury before starting and running the engine,
ensure the vehicle is parked on a level surface, parking
brake is set, and the wheels are blocked.
1. Attempt to start and run the engine, if the engine starts and runs, no further troubleshooting
is required. Shut down the engine.
2. If the engine fails to start and run, check for aerated fuel; refer to section 4.23.
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PERSONAL INJURY
PERSONAL INJURY
6SE568 Copyright © PRELIMINARY 2007 DETROIT DIESEL CORPORATION
(Rev. ) All information subject to change without notice.