TM 5-2410-240-23-1
0019
Table 1. Engine Troubleshooting Procedures - Continued.
0019
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Engine Cranks But Will Not Start
7. Using MSD, select C6.6 D6K
- Continued
engine ECM, select Status
icon, and select Fuel Delivery
side of screen. Monitor fuel rail
pressure on right side of
screen while engine is crank-
ing at minimum speed of
150 RPM. Pressure at fuel rail
should be 25 MPa (3,625 psi)
or greater.
a. If less than 25 MPa,
Engine Starts - Timing ring on
perform the following:
crankshaft is misaligned and/or
Disconnect harness con-
damaged, replace engine
nector from engine speed
(WP 0051).
(crank position) sensor
Engine Does Not Start - Restart
(WP 0057). Attempt to
this troubleshooting procedure.
start engine.
b. If greater than 25 MPa,
Replace fuel injection pump
fuel injection pump is
(WP 0075).
faulty.
N OT E
4. Engine Misfires, Runs Rough, or
is Unstable
If fault only occurs under certain conditions, test engine under
those conditions. Examples of certain conditions are high RPM,
full load, and engine operating temperature. Troubleshooting
symptoms under other conditions can give misleading results.
Codes Found - Troubleshoot any
active codes before continuing
Select engine ECM C6.6 D6K.
Check for any diagnostic
2. Inspect air intake system for
Blockage/Restriction Found -
streaks which may indicate
Remove blockages/restrictions.
unfiltered air leakage. Inspect
Damage Found - Replace dam-
all air filter gaskets and the
aged lines or hoses (WP 0040).
connections. Refer to Air Inlet
3. Replace fuel filters: primary
(WP 0074), secondary
(WP 0063), and third
(WP 0066).
Contaminated - Drain contami-
nated fuel and replace with clean
fuel (WP 0175).