Technical information

TROUBLE SHOOTING
EN / WHISPER 3.5 / December 2009 / Copyright © 2009 Mastervolt 29
Problem Possible cause What to do?
• Air in the fuel pipes
Bleed air from fuel system (refer to maintenance
section).
• Blocked injector.
Have the injector tested and cleaned if
necessary.
• Wrong valve clearance.
Adjust valve clearance.
• Temporarily hunting (this will disappear when engine has run in).
• Too much oil.
Drain oil to proper level.
• Lack of fuel.
Check fuel supply system: fuel pump and filter.
• Lack of intake air.
Check air intake.
• Choked exhaust system, exhaust blocked,
rubber exhaust hose kinked.
Check exhaust system.
• Generator overloaded
Reduce the electrical load (switch off some
consumers).
• Generator over energised.
Check that the proper capacitor type is installed
and that it is connected correctly.
• Defective generator (windings, bearings or
other)
Generator must be sent to manufacturer for
repair of damaged bearing or winding.
Engine speed drops
• Damaged engine
Repair by Mastervolt service
Engine does not stop
on command
• Loss of control
Faulty Local Control Panel. Stop the engine
manually by the stop handle.
Check wire connections to stop solenoid. Check
solenoid valve function. Replace if necessary.
• Faint blue smoke - generally the result of light
load
Increase load.
• Heavy blue smoke - caused by lubricating oil:
Overfull oil sump or worn cylinder bore, stuck
broken or worn rings.
Check the oil level.
Check the compression.
Engine exhaust
smokes
• Black smoke –incomplete combustion caused
by: Overload, choked air filter, inlet
temperature too high, unsuitable fuel or water
in fuel.
Check the fuel .
Check for overload.
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.
• 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 Mastervolt.
• Excessive heat in cooling system (thermo-
switch 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 Mastervolt service.
Engine stops by itself
• Thermostat faulty
Check thermostat and replace
• Generator is being overloaded. MasterView
Easy Panel will indicate “IAC High” or
“Overload”.
Check electrical load and switch off some
consumers
Sooty, black exhaust.
• Insufficient intake air.
• Choked air filter.
Check intake air paths and filter, clean and
replace if necessary.