TROUBLE SHOOTING
28
July 2009 / WHISPER 6/8/11 / US / Copyright © 2009 Mastervolt
Problem
Possible cause
What to do?
•
Starter broken
Repair the starter motor
•
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.
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.
•
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 (only if
applied)
Replace faulty parts.
•
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 (only if applied)
Replace faulty parts.
•
Faulty electronic governor (only if
applied)
Replace faulty parts.
•
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
