EM-8
ENGINE MEC HANICAL
-
Diesel Engine Diagnosis
EXC E S S I V E EXH AUST SMOKE
NOTE:
,. Check that the air cleaner is not clogged.
2.
Check with the customer whether or not oil consumption has been excessive.
(Possible Cause)
2.
CLOGGED FUEL FILTER
(Check Procedure and Correction Method)
Refer
to item 8 of ENGINE CRANKS NORMALLY
BUT WILL NOT START.
NOTE:
B
l
ac
k
smoke indicates advanced timing
while while smoke i
n
dicates retarded liming.
Adjustments should be made accordingly.
Refer to
item
5
of LACK OF POWER.
NOTE: At high speed
12.000 - 3,000
rpm), a
clogged filter lends to make the e
x
haust
smoke white.
R
ef
e
r
to
item
9
of ENGINE CRANKS NORMALLY
BUT WILL NOT START.
NOTE: Excessive e
x
h
au
s
t
smoke Is often
caused by nozzle pressure being too low.
EXC E S S I V E FUEL CONSUM PTION
NOTE: Check whether th
e
clutch slips, brakes grab, whether the tires are the wrong size or the
air filter is clogged.
(Possible Cause)
(Check Procedure and Correction Method)
,
.
FUEL LEAKAGE
Refer to
ilem 3
of ROUGH IDLE WITH WARM
ENGINE.
After sufficiently warming up engine, check
that
idle speed
is
as specified below.
3.
(See page EM-26 or 28)
Idle speed: MIT
660
rpm
A/T
12Hi
750
'pm
A/T (12H·Tl
770
rpm
1f
not. adjust with the idle speed adjusting screw
MAXIMUM SPEED TOO HIGH
Start engine, depress the accelerator pedal to the
floor and check that maximum speed
is
as
specified below. (See page EM-26 or 28)
Maximum speed:
wI Fluid coupling
4,170
rpm
wlo Fluid coupling
4,100 rpm
If not adiust with the maximum speed adjusting
