TROUBLE SHOOTING
32
Copyright © 2008 Mastervolt / December 2008 / WHISPER 15 ULTRA - Three Phase / US
PROBLEM CAUSE
SOLUTION
•
To thick engine lubricating oil.
Change oil for a lower viscosity.
•
Out of fuel or faulty fuel, water in the
fuel.
Fill up with fuel or replace with better quality.
•
Fuel solenoid is not opening (no “click”
can be heard).
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).
•
Wrong valve clearance.
Adjust valve clearance,
•
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. When the outlet port
is strongly affected by rust, the exhaust system is
not properly installed (refer to paragraph 5.4.3).
Contact Mastervolt service department for advice.
•
Blocked injector.
Have the injector tested and cleaned if necessary.
Starter is turning engine
smoothly, but engine fails to
start
•
Loss of compression by wear out or
damage
Repair by Mastervolt service
•
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.
•
Disturbances on the electrical system/
user side.
Check if electrical load is fluctuating
•
Faulty fuel lift pump.
Check and repair
•
Choked air filter.
•
Lack of air.
Check the air intake
•
Choked exhaust system, exhaust
blocked, rubber exhaust hose kinked.
Check the exhaust hose
•
Air in the fuel pipes
Bleed air from fuel system (refer to maintenance
section).
•
Faulty electronic governor
Replace faulty parts. Contact Mastervolt service
department for advice
•
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 runs irregularly.
•
Ongoing hunting caused by faulty
electronic governor
Replace faulty parts. Contact Mastervolt service
department for advice
•
Faulty electronic governor
Replace faulty parts. Contact Mastervolt service
department for advice
•
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 the 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
•
Fuel solenoid is not switching off •
•
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