Problem
GB
The engine stops after
ignition
The engine does not
reach the operating
speed
Emission of black
smoke from the exhaust
pipe
Light emission of white
smoke from the exhaust
pipe
Abundant emission of
white smoke from the
exhaust pipe
English
Cause
Presence of air in the fuel supply
circuit
Clogged fuel filter
The injection pump is set incor-
rectly or is faulty
The electric cables are discon-
nected or they do not guarantee
continuity
Clogged fuel filter
Presence of air in the fuel supply
circuit
The injection pump is set incor-
rectly or is faulty
Dirty or faulty injectors
Clogged air filter
Overload
Dirty or faulty injectors
The injection pump is set incor-
rectly or is faulty
Faulty turbocharging turbine
Oil level too high
Worn segments
Worn valve guideways
Burnt gasket head
Engine overheating. Clogged
coolers
Clogged seawater filter
Worn seawater pump impeller
Broken or worn belt
Failure of water temperature
sensor
Remedy
Carry out bleeding (see "Fuel supply circuit bleeding")
Replace filter (see "Inlet air filter replace-ment")
Adjust the pump or replace it. Apply to a service
Check the electric connections
Replace filter (see "Fuel filter replacement")
Carry out bleeding (see "Fuel supply circuit bleeding")
Adjust the pump or replace it. Apply to a service
Clean or replace injectors. Apply to a service work-
Clean or replace the filter (see "Inlet air filter replace-
Reduce the load
Clean or replace injectors. Apply to a service work-
Adjust the pump or replace it. Apply to a service
Replace the turbine. Apply to a service workshop
Adjust the oil level
Check compression. Apply to a service workshop
Check wear. Apply to a service workshop
Apply to a service workshop
Clean the coolers. Apply to a service workshop
Clean or replace the filter
Replace the impeller. Apply to a service workshop
Replace the belt (see "Belt replacement")
Replace the sensor. Apply to a service workshop
38
MR 500
workshop
workshop
shop
ment")
shop
workshop
Ed.4 - 02/2024