Fuel System
Z001138-1_2013-02-01
4/51
Items to Check / Troubled Systems
Air Intake, Fuel Supply & Injection System
[Factors/Cause of Trouble]
No / Relativ
e
ly
little ex
haust
gas
Bla
c
k
ex
ha
ust s
m
o
k
e
White e
x
ha
ust smoke
Larg
e
fuel co
nsum
ption
Larg
e
lube oil
con
s
umptio
n
Poor en
gine
starting
perfo
rman
ce
Engine sto
p
s
runni
ng
Low (drop in)
engin
e
outpu
t
Engine o
v
e
rh
eating
large bl
ow-b
y gas emi
ssi
on
Knocking n
o
is
e
A
bnorm
a
l idli
ng re
volutio
n
s
Low comp
re
ssion
p
re
s
sure
Position of excentri
c
shaft
incorrec
t
Potential for Cav
itation
Damages
to Injec
tor
Potential of corrosi
on
damag
es to Injecto
r Syste
m
Inc
o
rrec
t s
e
tting of rac
k
linke
age
s or
referen
c
e p
o
in
t
aerate
d
fuel a
ppea
ring to
return line
Fuel Suppl
y
S
yst
em
Running
out
of
Fuel
•
•
Fuel
Supply
Line
Valve
closed
•
•
Clogging of fuel filter or water separator
•
•
Breakdown of fuel feed pump
•
•
•
•
•
•
Air drawn inside the fuel supply line
•
•
•
•
•
•
•
•
Clogging of the fuel piping before fuel pump
•
•
•
•
•
•
•
Fuel
Injection
S
yst
em
Water or air mixed in fuel
•
•
•
•
Clogging of fuel filter,fuel supply line or water
separator
•
•
•
Inferior performance of feed pump
•
•
•
•
Faulty spray condition of nozzle
•
•
•
•
•
•
Faulty injection timing
•
•
•
•
•
•
•
•
Inferior performance of delivery valve
•
•
Intak
e
&
Exhau
st
sy
st
em
Clogging of air filter
•
•
•
•
•
•
Clogging or collapse of exhaust pipe or muffler
•
•
•
•
High intake air temperature
•
•
•
•
Bas
e
Engine
S
yst
em
Settings
Faulty valve seat contact
•
•
•
•
•
•
•
Wear or stiffening of valve guide
•
•
•
•
•
Wear of piston rings, cylinder liner
•
•
•
•
•
•
•
•
Summary of Contents for Marine Engine 2012 Series
Page 35: ...General 35 65 Z001138 1_2013 02 01 Trouble Indication ...
Page 36: ...General Preliminary Service Manual MARINE 2012 Z001138 1_2013 02 01 36 65 ...
Page 51: ...General 51 65 Z001138 1_2013 02 01 G Notes on safety ...
Page 69: ...Engine Z001138 1_2013 02 01 4 87 Kapitel MOUNT BRACKET COVER T BELT GASKET SET ...
Page 154: ...Fuel System Z001138 1_2013 02 01 2 51 ...
Page 159: ...Fuel System 7 51 Z001138 1_2013 02 01 03 00 03 Unit injector ...
Page 190: ...Fuel System Z001138 1_2013 02 01 38 51 Schema Injection Timing Device ITD ...
Page 211: ...Cooling System 5 21 Z001138 1_2013 02 01 ...
Page 231: ...Electrical System Z001138 1_2013 02 01 4 47 ...
Page 235: ...Electrical System Z001138 1_2013 02 01 8 47 ...
Page 236: ...Electrical System 9 47 Z001138 1_2013 02 01 ...
Page 238: ...Electrical System 11 47 Z001138 1_2013 02 01 ...