5-11
5-11
NOTE:
NOTE:
Idling the engine for a long time wastes fuel. It
Idling the engine for a long time wastes fuel. It
wastes natural resources and causes air pollution.
wastes natural resources and causes air pollution.
Shut down the engine whenever you leave the vehi-
Shut down the engine whenever you leave the vehi-
cle, even for a short period.
cle, even for a short period.
If the engine has been idling for a relatively long
If the engine has been idling for a relatively long
time, the muffler may give off white smoke during
time, the muffler may give off white smoke during
acceleration. This is a normal effect of the catalytic
acceleration. This is a normal effect of the catalytic
converter. If you start to drive immediately after
converter. If you start to drive immediately after
starting the engine (while the engine is still cold),
starting the engine (while the engine is still cold),
you will encounter the following problems:
you will encounter the following problems:
In a cold-weather area, the cold engine will
In a cold-weather area, the cold engine will
cause the fuel to ignite poorly, and the engine
cause the fuel to ignite poorly, and the engine
may knock.
may knock.
If the idle speed is too low, the engine will be
If the idle speed is too low, the engine will be
abnormally noisy. Be sure to return the idle
abnormally noisy. Be sure to return the idle
speed to the appropriate value.
speed to the appropriate value.
With the engine idle control turned to the automatic
With the engine idle control turned to the automatic
control position, the engine’s idle speed is adjusted
control position, the engine’s idle speed is adjusted
automatically. To make the engine warm up more
automatically. To make the engine warm up more
quickly
quickly
, take
, take
the following
the following
steps:
steps:
1.
1.
Afte
Afte
r the e
r the e
ngine s
ngine s
tart
tart
s, tur
s, tur
n ON t
n ON t
he eng
he eng
ine
ine
warm-up
warm-up
switch
switch
.
.
The
The
exhaust
exhaust
brake
brake
indi-
indi-
cator
cator
will
will
illuminate,
illuminate,
the
the
engine
engine
speed
speed
will
will
start to increase, and the exhaust brake will
start to increase, and the exhaust brake will
operate.
operate.
NOTE:
NOTE:
Before turning ON the engine warm-up switch, be
Before turning ON the engine warm-up switch, be
sure to set the engine idle control to the AUTO posi-
sure to set the engine idle control to the AUTO posi-
tion. Black smoke may be produced if the engine
tion. Black smoke may be produced if the engine
warm-up switch is turned ON with the engine idle
warm-up switch is turned ON with the engine idle
speed raised.
speed raised.
2.
2.
Conti
Conti
nue t
nue t
o let
o let
the en
the en
gine w
gine w
arm
arm
up un
up un
til th
til th
e
e
needle on the coolant temperature gauge starts
needle on the coolant temperature gauge starts
to move.
to move.
When the coolant temperature rises sufficiently,
When the coolant temperature rises sufficiently,
the engine warm-up process stops automatically
the engine warm-up process stops automatically
and
and
the
the
exhaust
exhaust
brake
brake
indicator
indicator
goes
goes
out.
out.
3.
3.
Tur
Tur
n OF
n OF
F the
F the
engin
engin
e war
e war
m-up
m-up
swit
swit
ch.
ch.
Z14897
Z14897
Z08917
Z08917
Z11847
Z11847
Z14899
Z14899
https://www.besttruckmanuals.com/