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UEN00246-02
S-10 Fuel consumption is excessive
General causes why fuel consumption is excessive
Leakage of fuel
q
Defective condition of fuel injection (fuel pressure, injection timing)
q
Excessive injection of fuel
q
Confirm recent repair history
Degree of use of machine Operated for long period
Condition of fuel
consumption
There is external leakage of fuel from engine
Combustion is irregular
Engine oil level rises and oil smells of diesel fuel
When exhaust manifold is touched immediately after starting engine, temperature of some
cylinders is low
Low idle speed is high
Pump relief speed is high
Exhaust smoke colour
Remove and inspect head cover directly
Inspect feed pump oil seal directly
Carry out troubleshooting according to "Rail Press (Very) Low Error (*1)" indicated by code
When a cylinder is cut out for reduced cylinder mode operation, engine speed does not change
If spill hose from injector is disconnected, much fuel spills
Carry out troubleshooting according to "Coolant Temp Sens High (Low) Error (*2)" indicated by
code
Check with monitoring function
*1: Displayed failure codes [CA559] and [CA2249]
*2: Displayed failure codes [CA144] and [CA145]
18
More than for other machines of same model
Gradually increased
Suddenly increased
Black
White
40 Troubleshooting
Causes
E E
Q
Q
Q Q
w
w
w
Q Q
Q
q
q
q
q
Remedy
PC210, 230, 240-8
1
E
Q Q Q
Q
w
w
Q
Q
Q Q
q
q
q
q
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Table of Contents
Troubleshooting
