Whisper Power M-SC3.5 User Manual page 31

PROBLEM
Engine starts, but stops after 10
up to 30 seconds
Engine stops by itself
Sooty, black exhaust.
Loss of power
Over-temperature
EN / M-SC3.5 / May 2010
POSSIBLE CAUSE
Protection system stops the engine; this
can be caused by oil pressure failure,
lack of cooling water (exhaust
temperature alarm). Overload, loose wire
or faulty alarm switch.
• Overload or short circuit.
• Lack of fuel.
• Oil pressure low. (oil pressure switch
tripped).
• Excessive heat in cooling system
(thermoswitch tripped).
• Lack of cooling water (exhaust switch
tripped).
• Impeller broken.
• Cooling water blocked.
• Water strainer blocked.
• Air or water in the fuel.
• Blocked air or fuel filter.
• Loss of compression by wear out or
damage.
• Thermostat faulty.
• Generator is being overloaded.
MasterView Easy Panel will indicate
"IAC High" or "Overload".
• Insufficient intake air.
• Choked air filter.
• Fuel injector faulty.
• Valve clearance incorrect.
• Poor fuel quality.
• Poor quality lubricating oil.
• Continuous running with very low load.
• Wrong measurement. Check if the load is measured correctly. Does the Amp meter show
the correct value? When calculating the load by multiplying voltage and amps this should
be done by using the exact values, taking into account the power factor of the
consumers. When any doubt, measure the power directly with an appropriate instrument.
• Overfull oil sump.
• Choked fuel filter.
• Choked air filter.
• Exhaust blocked.
• Injector blocked.
• Loss of compression, sticking.
• Damaged piston ring.
• Wear out of cylinder.
• Overload.
WHAT TO DO?
Display on MasterView Easy Panel will help to
indicate failure. See section 5.2.2.
Switch off the consumers and test for short
circuit.
Check fuel supply system: fuel lines, pump,
filter, valves, tank level, etc.
Check oil level.
Check engine's oil pressure and have it
repaired by Whisper Power.
Check cooling water system flow: water pump,
inlet water filter, coolant flow.
Repair by Whisper Power.
Check thermostat and replace.
Check electrical load and switch off some
consumers.
Check intake air paths and filter, clean and
replace if necessary.
Replace injector.
Readjust valve clearance.
Use better quality diesel.
Use better quality oil.
Increase load and have the engine run for a
few hours.
Bring the oil to the correct level.
Replace the fuel filter.
Check air inlet openings; clean air filter.
Check the exhaust system.
Have the injector checked.
Have the compression measured.
Clean or replace the rings.
Have the compression measured and have the
engine overhauled.
Take away the overload.
TROUBLE SHOOTING
31