SECTION 3 − DUTY − INDUSTRIAL APPLICATION
90
MOTORI
ED. FEBUARY 2003
ANOMALY POSSIBLE CAUSE REMEDY NOTE
The en gin e smokes abnormally. Black or
dark grey smoke.
The injection pump has an excessive ad-
vance.
Correct the set−up.
Theholesintheatomisers(orsomeof
them) are partially or entirely blocked.
Replace the injectors with a series of new
injectors or clean and rectify the original
ones using suitable equipment.
Air cleaner blocked or deteriorated. Clean or replace the filter element.
Loss of compression in the engine due to:
stuck or worn flexible rings;
worn cylin der liners;
valves deteriorated or badly adjusted.
Overhaul the engine or limit the interven-
tions to the relative parts.
Unsuitable in jec t ors, different types of injec -
tors or incor rectly calibrated.
Replace or c alibrate the injectors.
Injection hoses with an unsuitable internal
diameter, end of hoses pinched due to re-
peated bl ocking.
Check conditions of the end or unions and
where necessary replace the h o ses.
Blue, grey−blue, grey smoke tending to whi-
te.
Excessive delay in injection pump. Correct the set−up of the pump. See your dealer.
K.K.S.B. automatic cold advance device mal-
functioning.
Check or replace injection pump. See your dealer.
Faulty injector. Replace the injector.
Leaking of oil from the piston rings caused
by glued or worn rings or wearing of cylin-
der liner walls.
Overhaul the engine.
Engine oil passing through the intake
guides−valves following wearing of guides or
valve stems.
Recondition the cylinder h ead.
Engine too cold (thermostat blocked or in -
efficient).
Replace the thermostat.
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