25
3
Service Manual LDW FOCS 502 automotive _ cod. ED0053027270 - 3° ed_rev. 02
3.1 LOOKING FOR MALFUNCTIONS
MALFUNCTIONS
PROBABLE CAUSE
PROBLEM
En
gi
ne d
oe
s n
ot s
ta
rt
E
ng
in
e s
ta
rt
s a
nd
the
n s
top
s
Doe
s n
ot
a
cce
le
ra
te
Inc
on
si
st
en
t r
p
m
Black
s
m
ok
e
W
hi
te
s
m
oke
Lo
w o
il p
re
as
su
re
O
il c
on
sump
tio
n
to
o h
igh
C
on
somm
at
ion
hu
ile e
n e
xc
ès
O
il a
nd
c
ond
en
sa
tion
dr
ippi
ng
fr
om
th
e
exh
au
st
C
o
ola
nt
o
ve
rhe
at
s
FU
E
L C
IR
CU
IT
Clogged pipes
Clogged fuel filter
Air in the fuel circuit
Clogged tank breather
Faulty fuel pump
Blocked injector
Blocked injection pump valve
Injector not adjusted
Excess leaking in the plunger
Jammed injection pump delivery control
Wrong injection pump delivery setting
LUBR
IF
IC
AT
IO
N
High oil level
Blocked pressure relief valve
Worn oil pump
Air in the oil intake pipe
Faulty pressure gauge or switch
Clogged oil suction hose
E
LE
C
TRI
C
A
L
SY
S
TE
M
Burnt fuse on pre-heating glow plugs
Failure in glow plugs control unit
Discharged battery
Inefficient or wrong cable connection
Faulty ignition switch
Faulty starter motor
M
A
IN
TEN
A
N
C
E
Air filter clogged
Excessive idle operation
Incomplete running-in
Overloaded engine
Clogged cooling circuit
Slack or broken fan control belt
A
D
JU
S
TM
E
N
TS
/
R
E
P
A
IRS
Incorrect injection timing
Delayed injection
Incorrect governor linkage adjustment
Broken or loose governor spring
Low idle setting
Worn or stuck piston rings
Worn or scored cylinders
Worn valve guides
Valves stuck
Worn crankshaft/connecting rod bearings
Non-sliding speed governor leverage
Driving shaft not turning freely
Damaged head gasket
Slack pump/injector control rod
Incorrect pump/injector delivery balancing
Summary of Contents for Lombardini LDW FOCS 502 Euro 2
Page 1: ...LDW FOCS 502 Automotive SERVICE MANUAL...
Page 26: ...26 3 Service Manual LDW FOCS 502 automotive _ cod ED0053027270 3 ed_rev 02...
Page 30: ...30 4 Service Manual LDW FOCS 502 automotive _ cod ED0053027270 3 ed_rev 02...
Page 64: ...64 6 Service Manual LDW FOCS 502 automotive _ cod ED0053027270 3 ed_rev 02 Note...
Page 84: ...84 7 Service Manual LDW FOCS 502 automotive _ cod ED0053027270 3 ed_rev 02 Notes...
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