Trouble Shooting Table - Mastervolt WISPER 8ULTRA 1500 RPM User Manual

5.2.2

Trouble shooting table

Problem
Diesel engine fails to crank, the
starter makes clicking noises, or
the engine cranks very slowly
Starter is turning engine
smoothly, but engine fails to
start
Engine runs irregularly.
EN / WHISPER 8 & 10 ULTRA / December 2009 / Copyright © 2009 Mastervolt
Possible cause
• Almost certainly this is an electrical
problem. Display will indicate "LOW
START BAT"
• One other possibility is that the engine
is locked by water in the cylinder or
there is other severe damage..
• Starter battery switched "OFF".
• Starter
battery voltage
(battery too weak).
• Faulty fuse on the control panel
• Wiring control system faulty
• Starter broken
• To thick engine lubricating oil.
• Out of fuel or faulty fuel, water in the
fuel.
• Fuel solenoid is not opening (no "click"
can be heard).
• Fuel lift pump is not working.
• Fuel filter is blocked.
• Air in fuel lines.
• Wrong valve clearance.
• Low compression because of dirty
valves.
• Blocked injector.
• Loss of compression by wear out or
damage
• Unsuitable contaminated fuel
• Lack of fuel.
• Choked fuel filter.
• Disturbances on the electrical system/
user side.
• Faulty fuel lift pump.
• Choked air filter.
• Lack of air.
• Choked exhaust system, exhaust
blocked, rubber exhaust hose kinked.
• Air in the fuel pipes
What to do?
Check on water in the cylinder and further
damage by cranking. When there is water in the
cylinder, then deactivate the control system,
disconnect the battery, remove the glow plugs.
Crank the engine to remove the water through the
opening of the glow plugs. Check oil on the
presence of water and change oil. Find out how
the water did enter the cylinder (check the air
vent). Take precautions to prevent it from
happening again. When there is no mechanical
malfunction the problem must be an electric
malfunction.
Check position of the battery switch and switch
"ON".
Check battery voltage. Recharge the battery.
insufficient
Inspect battery terminals and cables for a good
electrical connection (inspect against corrosion,
tattered wires, etc.)
Replace fuse
During the normal starting process, the battery
voltage drops to 11V (with a fully charged
battery). If the voltage does not drop during
starting, the electrical connection is faulty. If the
battery voltage drops lower than 11V, then the
battery has been discharged too deep.
Repair the starter motor
Change oil for a lower viscosity.
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).
Adjust valve clearance,
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.
Have the injector tested and cleaned if necessary.
Repair by Mastervolt service
Fill up with fuel or replace by better quality.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Check if electrical load is fluctuating
Check and repair
Check the air intake
Check the exhaust hose
Bleed air from fuel system (refer to maintenance
section).
TROUBLE SHOOTING
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