© MOSA
REV.3-07/06
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
Troubleshooting
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 generator 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)
GE
Diesel engine
ENGINE
1) Check position
2) Unblock
3) Lacking or insufficient preheating
4) Replace
5) Recharge or replace.
6) Tighten and clean. Replace if
7) Repair or replace.
8) Refill tank, un-aerate the circuit.
9) Ask for intervention of Service
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
3) Eliminate excess oil.
4) Ask for intervention of Service
1) Clean or replace
2) Check the load connected and
3) Ask for intervention of Service
1) Eliminate excess oil.
2) Insert load only with motor sufficiently
3) Ask for intervention of Service
1) Clean or replace.
2) Check the feed circuit, clean and
3) Ask for intervention of Service
1) Reset level. Check for leaks.
2) Replace filter.
3) Ask for intervention of Service
4) Check the sensor and electrical
1) Check the load connected and
2) Check the cooling vent and relative
3) Restore level. Check for leaks or
Solution
phase for sparkplugs.
Malfunction in circuit: repair.
Check the battery charge circuit on
motor and automatic panel.
corroded.
Department.
Department.
Department
diminish.
Department.
hot
Department.
refill once again.
Department.
Department.
circuit.
diminish.
transmission belts
breakage in the entire cooling circuit,
pipes, couplings, etc.
M
40.2