Detroit Diesel MBE 4000 DDEC VI Troubleshooting Manual page 41

2.2.2 Performing Test #1
Test as follows:
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.
Diesel engine exhaust and some of its constituents are
known to the State of California to cause cancer, birth
defects, and other reproductive harm.
□ Always start and operate an engine in a well ventilated
area.
□ If operating an engine in an enclosed area, vent the
exhaust to the outside.
□ Do not modify or tamper with the exhaust system or
emission control system.
1. Start the engine and warm it up to working temperatures: 80°-95°C (176°-203°F).
2. Check the fuel pressure at two points: idle speed and rated speed.
3. Compare the test results with the fuel systems specifications for pressure listed in Table
2-1.
Speed
Fuel Pressure Test at idle rpm
Fuel Pressure Test at rated rpm
Maximum difference between fuel filter housing
inlet and outlet pressure
Table 2-1 Fuel System Specifications for Pressure
All information subject to change without notice.
6SE568 Copyright © PRELIMINARY 2007 DETROIT DIESEL CORPORATION
PERSONAL INJURY
PERSONAL INJURY
(Rev. )
MBE 4000 DDEC VI TROUBLESHOOTING GUIDE
Pressure
2 bar (29 psi) – minimum
5.5 – 6.5 bar (80 – 94 psi)
0.3 bar (4 psi)
2-7