Cub Cadet Yanmar 3TNV72 - Manual (Page 278)

TROUBLESHOOTING
T
N
V IDI Service Ma
nual
13
-1
5
Troubleshooting Charts
T
rou
ble
Symp
to
m
S
ta
rt
in
g
Pro
b
le
m
Insufficient En
gine
Ou
tp
ut
Poor Exh
aust
Co
lo
r
High Knoc king Sou nd Du ring Co mb ustion
Abnorm al Engine Sound
Uneven Combust ion Sound
Engine Surging
Excessive Engine Vibration
Difficulty in Returning to Low Speed
Excessive Fuel Consumption
En
gine
O
il
Excessive Blow-by Ga s
Engine Coo
lant
Air In
ta
ke
Exhaust Temper atur e Rise
Cor
rect
ive Act
ion
Re
fe
re
nce Pag
e
s
Engine Does Not Star t.
Eng
ine
Starts bu
t St
op
s
Soon.
Exha
ust
Color
Du
ri
n
g
Wo
rk
Du ring Idlin g
Durin g Work Oper ation
Excessive O il Co nsumption
Dilution by Diesel Fuel
Oil with Water
Low Oil Pres sure
Overhe at
Low Water T empera ture
Pres sure Drop
Pressure Ris e
Exhau
st
Smoke
Ordina ry
Whit e
Black
Whit e
Black
Cause
None
Little
Much
Fuel Syst em
A
ir in
F
u
el
Syst
em
O
O
O
Bleed
th
e Air.
See
“Prim
ing
t
h
e
Fue
l Syst
em”
on
p
ag
e
4-
12.
Clo
gge
d or
Cr
acked Fu
el Line
O
O
O
Cle
an or
Re
place
.
Se
e “Che
ck and
Re
place
Fu
el
Hoses and
Engin
e
Cool
ant
Hoses”
on
p
a
ge
5
-3
7.
In
s
u
ff
icie
nt
F
u
el
Su
pp
ly t
o
F
uel
In
ject
ion
Pu
mp
OO
O
Ch
eck the
Fu
el Tan
k
Cock, Fu
el
Filt
er
,
F
uel Lin
e
, and
F
uel Fe
ed
Pu
mp.
See
th
e a
p
p
rop
ria
te
pr
oced
ur
e in
Per
iodic Main
te
na
nce
on
p
age
5
-1
Un
even
I
nje
ct
ion
Vo
lume
fr
om Fu
el
Injection Pump
O
OOO
OOOO
O
C
h
e
c
k
a
n
d
A
d
ju
s
t.
See “
T
estin
g
of
Fue
l
In
je
cto
rs” on
p
ag
e
7-
24.
E
xcessiv
e
Fuel Injec
tion V
o
lume
O
O
O
O
O
O
O
C
heck
and Adjust
.
See “
T
estin
g
of
Fue
l
In
je
cto
rs” on
p
ag
e
7-
24.
P
o
o
r
Spr
a
y
Pa
tte
rn
f
ro
m
Fue
l In
je
ctio
n
No
zz
le
O
OOO
OOOO
O
C
h
e
c
k
a
n
d
A
d
ju
s
t.
See “
T
estin
g
of
Fue
l
In
je
cto
rs” on
p
ag
e
7-
24.
P
riming Failure
O
For
eign
Mat
ter Tr
ap
ped
in th
e
Va
lve In
sid
e
t
he Prim
ing Pum
p
(Disassemble and C
lean).
Se
e “Fue
l Syst
em
Co
mpo
nen
ts
” on
p
ag
e
7-
10.
Clo
gge
d Str
ain
er
a
t Fe
ed
Pum
p In
let
O
Clean the Strainer.
See
“
D
ra
in
F
u
el T
a
nk
”
on
p
ag
e
5-
25.
TNV_
IDI_
Serv
iceM
anua
l_(3
TNV72
for
YN
only
).bo
ok
15 ペ
ー
ジ
２０
０
７年
１
１
月２９
日 木
曜日
午後２時
５８分