TROUBLE SHOOTING
EN / W-SC3 Mobile / January 2011
23
PROBLEM CAUSE
SOLUTION
Starter is turning engine
smoothly, but engine fails to
start
•
Out of fuel or faulty fuel, water in the
fuel.
Fill up with fuel or replace with better quality.
•
Fuel inlet solenoid valve is not opening. Check wire connections and circuitry to
solenoid. (Refer to DC wiring diagram)
•
Fuel lift pump is not working.
•
Fuel filter is blocked.
•
Air in fuel lines.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Bleed air from fuel system (refer to
maintenance section).
•
Low compression because of dirty
valves.
Clean valves. Take off the injection bent and
inspect the outlet port. When little rust in the
port clean the valve by taking off the valve
spring and rotate until rust is removed.
•
Wrong valve clearance.
Adjust valve clearance,
•
Blocked injector.
Have the injector tested and cleaned if
necessary.
Engine runs irregularly.
•
Unsuitable contaminated fuel
•
Lack of fuel.
Fill up with fuel or replace by better quality.
•
Choked fuel filter.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
•
Faulty fuel lift pump.
Check and repair
•
Choked air filter.
•
Lack of air.
Check the air intake
•
Choked exhaust system, exhaust
chocked rubber exhaust hose kinked.
Check the exhaust hose
•
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).
Engine speed drops
•
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,
Check exhaust system.
(manifold and mufflers inside)
•
Generator overloaded by over-
energising.
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.
•
Damaged engine
Repair by Whisper Power service
Engine does not stop on
command
•
Loss of control
Faulty Digital Diesel Control unit. Stop the
engine manually by the stop handle.
Check wire connections to stop solenoid.
Check solenoid valve function. Replace if
necessary.
Engine exhaust smokes
•
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.
•
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.
