Engine Has Early Wear

TM 9-2320-312-24-2

Troubleshooting Section

2. Monitor the exhaust for smoke while the engine

There is a problem in the circuit of the

is being cranked.

speed/timing sensor if the electronic service tool

display reads 0 rpm during cranking. Refer to

If no smoke is present, there may be a problem

Troubleshooting, "Engine Speed/Timing Sensor

with the fuel quality or there may be a problem

Circuit - Test".

with the fuel supply.

If an engine rpm is present, check the sensor

3. Check the fuel quality. Refer to Truck Performance

installation. If the sensor is not properly installed,

and Driveability Diagnostic Guide, LEBT3477.

the sensor may read RPM but the sensor may

not be able to sense the tooth pattern. The

4. Check the fuel pressure. Refer to Testing and

ability to sense the tooth pattern is necessary to

Adjusting, "Fuel System Pressure - Test".

determine the cylinder position. Engine rpm is

present when the engine rpm is 50 rpm or more.

5. Ensure that the fuel system has been primed.

Refer to Testing and Adjusting, "Fuel System -

Injection Actuation Pressure

Prime".

System

6. Check for fuel supply lines that are restricted.

1. Crank the engine and monitor the injection

actuation pressure and the Injection Actuation

7. Check the fuel filters.

Control Valve output. The high pressure oil

system is operating properly if the pressure

8. If the temperature is below 0 C (32 F), check

output is a minimum of 6 MPa (870 psi).

for solidified fuel (wax).

2. Connect the electronic service tool and check for

Combustion Problem

event code 164-11 Injection Actuation Pressure

system fault. If an 164-11 event code has

Check for combustion problems.

been logged recently, refer to Troubleshooting,

"Injection Actuation Pressure -Test".

Examples of combustion problems are shown in the

following list:

3. If higher than actual pressure is being indicated,

then disconnect the injection actuation pressure

Outside temperatures are too cold.

sensor and try to start the engine. If the engine

starts, refer to Troubleshooting, "Injection

Mechanical problem

Actuation Pressure Sensor -Test".

Engine Software

i01434232

Engine Has Early Wear

Connect the electronic service tool and check for

the correct engine software. Ensure that there is not

SMCS Code: 7569

an active 252-11 diagnostic code (Incorrect Engine

Software 59) .

Probable Causes

If the diagnostic code is present, refer to

Dirt in the engine oil

Troubleshooting, "ECM Memory - Test".

Air inlet leaks

Theft Deterrent

Fuel leakage into engine oil

Ensure that the theft deterrent (if equipped) is not

active. Turn the ignition switch to the ON position.

Incorrect engine oil

Observe the display screen on the CAT ID.

Incorrect maintenance interval for the application

If the display screen on the CAT ID indicates that

the theft deterrent is enabled, the Theft Deterrent

Recommended Repairs

Passwords must be entered before the engine will

start.

Dirt in the Engine Oil

Fuel Supply

Remove dirty engine oil. Install new filter elements.

Put clean oil in the engine. Check the oil filter

1. Check the fuel supply.

bypass valve for a weak spring or a broken spring.

Look for the source of the contamination.