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Diesel Engine Troubleshooting Symptoms
33
Fuel consumption Is Excessive
This is symptom tree T-012.
Cause Correction
Overloading from malfunctioning accessories
Check and repair the accessories. Refer to the
OEM’s service manuals.
OK
Operator technique is not correct
Refer to the operation and maintenance
manual for proper operating speeds and loads.
OK
Fuel leaks (external)
Check the fuel lines, fuel connections, and fuel
filters for leaks. Check the fuel lines to the
supply tanks. Refer to the OEM’s service
manual.
OK
Poor-quality fuel or No.1 fuel is being used
Assure good-quality No.2 diesel fuel is being
used.
OK
Intake or exhaust restriction
Refer to troubleshooting logic for Exhaust Gas
is Blake.
OK
Defective or clogged injection nozzle
Replace the defective or clogged injection
nozzle.
OK
Incorrect injection timing
Adjust injection timing.
OK
Injection pump is adjusted incorrectly causing
excessive injection
Adjust or replace the injection pump.