Page 539 - Foton Workshop Manual - Auman EST-M

Engine section – Engine (Cummins ISF3.8) EG - 23

IN

Failure phenomenon Possible reason Failure elimination
DI
Check the engine oil level Verify if the engine oil scale
Engine oil level higher than specification
calibration and oil sump capacity is correct
EG
Engine oil not meeting the specification
Replace the engine oil or filter
of working condition
TR
Check the calibration of wheel resolution counter and

Calibration error for wheel revolution odometer. If necessary, calibrate or replace the wheel
AX
counter or odometer resolution counter or odometer. Use a new mileage to

calculate the fuel consumption
FR
Verify if the ECM calibration is correct Check the
Electric control module (ECM)
calibration revision history to correctly recover the
calibration failure
calibration stored in ECM ST

Auxiliary device utilizing the fuel in the
Check the fuel consumption rate of auxiliary device
fuel tank BR

When evaluating the fuel consumption, it is necessary to
BW
Equipment and environment factor consider the environment temperature, wind, tyre model,
impacting fuel consumption rate shaft alignment, driving route and pneumatic auxiliary
device EL
Fuel consumption too
much Check if the vehicle brake drags, and he gear-box fails.
Overloaded Check the cooling fan circulation time and the driving
device of engine

The drive system and engine are not Check if the gear driving device and driving system parts
matched correctly fail

Intake manifold (boost) pressure sensor
Check the boosting pressure sensor and circuit
or circuit failed

Speed sensor or other circuit failure Check the sensor and circuit

Check if the speed sensor and its circuit fail and if
Speed sensor interfered
necessary, perform service

Check if the fuel pipe, fuel joint and fuel filter leak Check
Fuel leaking
the fuel pipe to the fuel tank

Intake or exhaust leaking Check if the intake system and exhaust system leak

Air-air cooler blocked or leaking Check if the air-air cooler is blocked or leaks

Intake system resistance exceeding Check the intake system resistance. Clean or replace the
technical specification air filter and intake pipe if necessary

EG-023