VM Motori R750 Serie Manual Instrucciones Para El Uso página 87

Problem
The engine does not
reach the operating
speed
Emission of black
smoke from the ex-
haust pipe
Light emission of white
smoke from the ex-
haust pipe
Abundant emission of
white smoke from the
exhaust pipe
The pressure
gauge shows a
too low engine
oil pressure and
the correspond-
ing warning light
comes on
The coolant tem-
perature warn-
ing light comes
on
English
Cause
Clogged fuel filter
Presence of air in the fuel supply circuit
Injection pump malfunction
Dirty or faulty injectors
Water and/or impurities in the fuel
Clogged air filter
Insufficient combustion air flow
Engine overheating
Overload
Dirty or faulty injectors
Faulty turbocharging turbine
Oil level too high
Worn segments
Worn valve guideways
Burnt gasket head
Water pump malfunction
Replace the belt
Thermostat valve malfunction
Coolant too low
Failure of pressure gauge
Oil level too low
Oil pump failure
Faulty sensor
Engine oil filter blocked
Coolant too low
Stucked overpressure valve of the load
plug
Water pump malfunction
Thermostat valve malfunction
Broken or worn belt
- 39 -
Remedy
Replace filter (see "Fuel filter replace-
ment")
Carry out bleeding (see "Fuel supply circuit
bleeding")
Apply to an authorised workshop
Replace the injectors
Apply to an authorised workshop
Apply to an authorised workshop
Clean or replace the filter
Apply to an authorised workshop
Apply to an authorised workshop
Reduce the load
Replace the injectors
Apply to an authorised workshop
Replace the turbine
Apply to an authorised workshop
Adjust the oil level
Check compression
Apply to an authorised workshop
Check wear
Apply to an authorised workshop
Apply to an authorised workshop
Replace the pump
Apply to an authorised workshop
See "Belt replacement (type Poly-V)"
Replace the valve
Apply to an authorised workshop
Top up, if necessary (see "Engine coolant
level check")
Check or replace the pressure gauge
Apply to an authorised workshop
Adjust the oil level (see "Engine oil level
control")
Check or replace the pump
Apply to an authorised workshop
Check and, if appropriate, replace the sen-
sor.
Apply to an authorised workshop
Replace the engine oil filter (see "Oil filter
cartridge replacement")
Adjust the engine coolant level (see "En-
gine coolant level check")
Replace the plug
Replace the pump
Apply to an authorised workshop
Replace the valve
Apply to an authorised workshop
Replace the belt (see "Belt replacement
(type Poly-V)")
Information about failures
R750
GB