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Troubleshooting
Problem
The motor does not start up
The motor does not accelerate.
Inconstant speed.
Black smoke
White smoke
Too little power provided by
motor.
Low oil pressure
High temperature
Possible cause
1) Start-up switch (I6) (where it is assembled) in
incorrect position
2) Emergency button (L5) pressed
3) Preheating (where it is assembled)
4) Engine control unit or starting key faulty.
5) Battery low
6) Battery cable terminals loose or corroded
7) Start-up motor defective
8) No fuel or air in feed circuit
9) Malfunction on feed circuit: defective pump,
injector blocked, etc.
10) Air filter or fuel filter clogged
11) Air in the gasoil filter.
12) Motor stopping device defective
13) Malfunction on electrical power circuit on ge-
nerator control panel
1) Air filter or fuel filter clogged.
2) Malfunction on feed circuit: defective pump,
injector blocked, etc.
3) Oil level too high.
4) Motor speed regulator defective.
1) Air filter clogged.
2) Overload.
3) Injectors defective. Injection pump requires
calibration.
1) Oil level too high.
2) Motor cold or in prolonged operation with little
or no load.
3) Segments and/or cylinders worn out.
1) Air filter clogged.
2) Insufficient fuel distribution, impurities or water
in feed circuit.
3) Injectors dirty or defective.
1) Oil level insufficient
2) Air filter clogged.
3) Oil pump defective.
4) Alarm malfunction.
1) Overload
2) Insufficient ventilation.
3) Insufficient coolant liquid (Only for water cooled
motors)
4) Water radiator or oil clogged (where it is as-
sembled)
5) Water circulating pump defective (Only for
water cooled motors)
6) Injectors defective. Injection pump requires
calibration
7) Alarm malfunction
ENGINE
1) Check position
2) Unblock
3) Lacking or insufficient preheating phase for
4) Replace
5) Recharge or replace.
6) Tighten and clean. Replace if corroded.
7) Repair or replace.
8) Refill tank, un-aerate the circuit.
9) Ask for intervention of Service Department.
10) Clean or replace
11) Take the air out filling the filter with gasoil.
12) Replace.
13) Check and repair.
1) Clean or replace.
2) Ask for intervention of Service Department.
3) Eliminate excess oil.
4) Ask for intervention of Service Department
1) Clean or replace
2) Check the load connected and diminish.
3) Ask for intervention of Service Department.
1) Eliminate excess oil.
2) Insert load only with motor sufficiently hot
3) Ask for intervention of Service Department.
1) Clean or replace.
2) Check the feed circuit, clean and refill once
3) Ask for intervention of Service Department.
1) Reset level. Check for leaks.
2) Replace filter.
3) Ask for intervention of Service Department.
4) Check the sensor and electrical circuit.
1) Check the load connected and diminish.
2) Check the cooling vent and relative transmis-
3) Restore level. Check for leaks or breakage in
4) Clean cooling fins on radiator
5) Ask for intervention of Service Department
6) Ask for intervention of Service Department
7) Check the sensor and electrical circuit
Diesel engine
Solution
sparkplugs.
Malfunction in circuit: repair.
Check the battery charge circuit on motor and
automatic panel.
again.
sion belts
the entire cooling circuit, pipes, couplings, etc.
M
40.2
REV.3-07/06
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