Technical information

TROUBLE SHOOTING
EN / M-SC3.5 / May 2010 31
PROBLEM POSSIBLE CAUSE WHAT TO DO?
Engine starts, but stops after 10
up to 30 seconds
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.
Display on MasterView Easy Panel will help to
indicate failure. See section 5.2.2.
Engine stops by itself • Overload or short circuit. Switch off the consumers and test for short
circuit.
• Lack of fuel. Check fuel supply system: fuel lines, pump,
filter, valves, tank level, etc.
• Oil pressure low. (oil pressure switch
tripped).
Check oil level.
Check engine’s oil pressure and have it
repaired by Whisper Power.
• 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.
Check cooling water system flow: water pump,
inlet water filter, coolant flow.
• Loss of compression by wear out or
damage.
Repair by Whisper Power.
• Thermostat faulty. Check thermostat and replace.
Sooty, black exhaust. • Generator is being overloaded.
MasterView Easy Panel will indicate
“IAC High” or “Overload”.
Check electrical load and switch off some
consumers.
• Insufficient intake air.
• Choked air filter.
Check intake air paths and filter, clean and
replace if necessary.
• Fuel injector faulty. Replace injector.
• Valve clearance incorrect. Readjust valve clearance.
• Poor fuel quality. Use better quality diesel.
• Poor quality lubricating oil. Use better quality oil.
• Continuous running with very low load. Increase load and have the engine run for a
few hours.
Loss of power • 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. Bring the oil to the correct level.
• Choked fuel filter. Replace the fuel filter.
• Choked air filter. Check air inlet openings; clean air filter.
• Exhaust blocked. Check the exhaust system.
• Injector blocked. Have the injector checked.
• Loss of compression, sticking. Have the compression measured.
• Damaged piston ring. Clean or replace the rings.
• Wear out of cylinder. Have the compression measured and have the
engine overhauled.
Over-temperature • Overload. Take away the overload.