SDEC D Series - Fuel Consumption Is too High

Operation and Maintenance Manual SC9DF Electronically Controlled Diesel Engine for Agricultural Equipment
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fuel pipe(s) or joint(s) them if necessary
Air enters the fuel system Prime the fuel system and check fuel inlet pipe for leakage
The intake or exhaust system is blocked Check the intake and exhaust system for resistance. Check the air filter
and replace the air filter element if necessary
The fuel injection timing or valve timing is
incorrect
Consult the authorized service station or provider
The turbocharger is damaged Check the turbocharger for pressure, replace it if its pressure is too low
The injector orifice is blocked, resulting in
poor atomization
Check and clean the injector or replace it
The ambient temperature is too high, or
the engine operates in high-altitude area
In the case of operation in the high-altitude area or at extra-high ambient
temperature, the engine’s power will decline. So it is required to reduce its
load properly during such operation
Check whether the diagnosis indicator
lamp lights up
Consult the authorized service station or provider
5.4 Fuel Consumption is too high
Possible causes Correction
The fuel leaks Check the lines of fuel system for poor sealing, tighten them if necessary
The fuel quality is poor Use the qualified fuel as specified in the manual
Additional load is produced due to failure
of auxiliary device
Check auxiliary devices and vehicle parts (refer to the specification of
vehicle manufacturer)
There is a big resistance in the intake
system
Check the air filter element and replace it if necessary
Check whether the diagnosis indicator
lamp lights up
Consult the authorized service station or provider