Whisper Power W-SC3 User Manual page 23

PROBLEM
Starter is turning engine
smoothly, but engine fails to
start
Engine runs irregularly.
Engine speed drops
Engine does not stop on
command
Engine exhaust smokes
EN / W-SC3 Mobile / January 2011
CAUSE
• Out of fuel or faulty fuel, water in the
fuel.
• Fuel inlet solenoid valve is not opening.
• Fuel lift pump is not working.
• Fuel filter is blocked.
• Air in fuel lines.
• Low compression because of dirty
valves.
• Wrong valve clearance.
• Blocked injector.
• Unsuitable contaminated fuel
• Lack of fuel.
• Choked fuel filter.
• Faulty fuel lift pump.
• Choked air filter.
• Lack of air.
• Choked
exhaust system,
chocked rubber exhaust hose kinked.
• Air in the fuel pipes
• Blocked injector.
• Wrong valve clearance.
• Temporarily hunting (this will disappear when engine has run in).
• Too much oil.
• Lack of fuel.
• Lack of intake air.
• Choked
exhaust system,
blocked,
• Generator
overloaded
energising.
• Generator over energised.
• Defective
generator
bearings or other)
• Damaged engine
• Loss of control
• Faint blue smoke - generally the result
of light load
• Heavy blue
smoke - caused by
lubricating oil: Overfull oil sump or worn
cylinder bore, stuck broken or worn
rings.
• Black smoke –incomplete combustion
caused by: Overload, choked air filter,
inlet temperature too high, unsuitable
fuel or water in fuel.
SOLUTION
Fill up with fuel or replace with better quality.
Check wire connections and circuitry to
solenoid. (Refer to DC wiring diagram)
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Bleed air from fuel system (refer to
maintenance section).
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.
Adjust valve clearance,
Have the injector tested and cleaned if
necessary.
Fill up with fuel or replace by better quality.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Check and repair
Check the air intake
Check the exhaust hose
exhaust
Bleed air from fuel system (refer to
maintenance section).
Have the injector tested and cleaned if
necessary.
Adjust valve clearance.
Drain oil to proper level.
Check fuel supply system: fuel pump and filter.
Check air intake.
Check exhaust system.
exhaust
(manifold and mufflers inside)
Reduce the electrical load (switch off some
by over-
consumers).
Check that the proper capacitor type is
installed and that it is connected correctly.
Generator must be sent to manufacturer for
(windings,
repair of damaged bearing or winding.
Repair by Whisper Power service
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.
Increase load.
Check the oil level.
Check the compression.
Check the fuel .
Check for overload.
TROUBLE SHOOTING
23