warning light DATSUN 510 1968 Service Repair Manual
[x] Cancel search | Manufacturer: DATSUN, Model Year: 1968, Model line: 510, Model: DATSUN 510 1968Pages: 252, PDF Size: 12.2 MB
Page 17 of 252
12
CHAPTER
THREE
13
IMPROPER
IDLE
MIXTURE
Roats
slowly
between
13
17
14
SMALl
SPARK
GAP
or
DEFECTIVE
POINTS
Slight
float
between
14
16
ignItIOn
switch
If
the
starter
still
fails
to
crank
properly
remove
the
starter
and
test
it
2
Starter
turns
but
does
not
engage
with
engine
This
trouble
is
usually
a
defective
pInion
or
sole
noid
shlfting
fork
It
may
also
be
that
the
teeth
on
the
pInion
flywheel
ring
gear
or
both
are
worn
down
too
far
to
engage
properly
3
Starter
engages
but
will
not
dISengage
when
IgmtlOn
switch
IS
released
TIns
trouble
is
usually
caused
by
a
sticking
sole
nOid
but
occasionally
the
pmlOn
can
jam
on
the
flywheel
With
manual
transmissions
the
pinion
can
be
temporanly
freed
by
rockmg
the
car
in
high
gear
Naturally
this
IS
not
poSSible
in
auto
matics
the
starter
must
be
removed
4
Loud
grinding
noISes
when
starter
runs
TIns
usually
means
the
teeth
on
the
pinion
and
or
flywheel
are
not
meshing
properly
It
may
also
mean
the
over
running
clutch
IS
broken
In
the
first
case
remove
the
starter
and
examine
the
gear
teeth
In
the
latter
remove
the
starter
and
replace
the
pmion
dnve
assembly
CHARGING
SYSTEM
Charging
system
troubles
may
be
in
the
alter
nator
voltage
regulator
or
fan
belt
The
follow
ing
symptoms
are
typical
1
Alternator
warning
lamp
does
not
come
on
when
IgmtlOn
is
turned
on
This
may
indicate
a
defective
ignition
switch
battery
voltage
regulator
or
lamp
Frrst
try
to
15
HEAD
GASKET
LEAK
Roats
between
5
19
16
RESTRICTm
EXHAUST
SYSTEM
Normal
when
first
started
Drops
to
0
as
rpm
Increases
May
eventually
rrse
to
about
16
start
the
car
If
it
doesn
t
start
check
the
igllltlon
sWitch
and
battery
If
the
car
starts
find
the
voltage
regulator
and
disconnect
the
wlute
red
Wire
this
is
the
lamp
wire
Ground
the
wire
If
the
lamp
hghts
the
voltage
regulator
is
defective
not
properly
grounded
try
tightening
the
mounting
screws
or
the
alternator
brushes
are
not
contactmg
the
commutator
If
the
lamp
does
not
light
when
the
wire
IS
grounded
the
lamp
is
probably
burned
out
replace
It
2
Alternator
warning
lamp
comes
on
and
stays
on
This
usually
mdicates
that
no
chargmg
is
takmg
place
Frrst
check
the
fan
belt
tension
and
adlust
if
necessary
Check
the
battery
condition
with
the
hydrometer
and
check
all
electrical
connec
tions
m
the
chargmg
system
Fmally
isolate
the
trouble
to
the
alternator
or
voltage
regulator
3
Alternator
warmng
lamp
flashes
erratically
This
usually
indicates
the
chargmg
system
is
workmg
intermittently
Check
the
fan
belt
ten
sion
and
all
electncal
connections
m
the
charg
ing
system
Check
alternator
brushes
and
cODlh
tlon
of
the
commutator
4
Baltery
reqUires
frequent
additiOns
of
water
or
lamps
require
frequent
replacement
The
alternator
IS
probably
overchargmg
the
bat
tery
The
voltage
regulator
is
probably
faulty
check
it
using
the
procedures
given
in
Chaper
Nme
5
ExceSSive
noISe
from
he
alternator
Check
for
loose
alternator
mountmg
The
Page 18 of 252
TROUBLESHOOTING
13
trouble
may
also
be
worn
bearings
Remove
the
alternator
and
repair
ENGINE
These
procedures
assume
the
starter
cranks
the
engme
over
normally
If
not
refer
to
Starter
section
m
this
chapter
1
Engme
won
t
start
Could
be
caused
by
the
IgOltlon
or
fuel
problems
First
determine
If
high
voltage
to
spark
plug
occurs
To
do
thiS
dISconnect
one
of
the
spark
plug
wires
Hold
the
exposed
wrre
termlOal
y
to
Y2
lOch
from
ground
any
metal
in
engine
com
partment
With
an
msulated
screwdriver
Crank
the
engme
over
If
sparks
do
not
Jump
to
ground
or
the
sparks
are
very
weak
the
trouble
may
be
10
the
IgnitIOn
system
See
Ignition
System
Trou
bleshootmg
to
further
check
If
sparks
occur
properly
the
trouble
may
be
10
the
fuel
system
See
Fuel
System
Troubleshootmg
2
Engme
misses
steadily
Remove
one
spark
plug
wrre
at
a
tune
and
ground
the
wrre
If
engme
mISs
increases
that
cyhnder
was
work
109
properly
Reconnect
the
wire
and
check
the
others
When
a
wire
IS
dIs
connected
and
engme
miss
remams
the
same
that
cylinder
IS
not
finng
Check
spark
as
descnbed
10
Step
1
If
no
spark
occurs
for
one
cyhnder
only
check
dlStnbutor
cap
wrre
and
spark
plug
If
spark
occurs
prop
erly
check
compressIOn
and
mtake
maOlfold
vacuum
to
ISolate
the
trouble
3
Engme
misses
erratlcally
at
all
speeds
Interrmttent
trouble
can
be
difficult
to
find
It
could
be
ill
the
Ignition
system
exhaust
system
or
fuel
system
Follow
troubleshooting
proce
dures
for
these
systems
carefully
to
isolate
the
trouble
4
Engme
misses
at
Idle
only
Trouble
could
exist
anywhere
ill
IgOltlon
system
Follow
Ignition
TroubleshootlOg
procedure
care
fully
Trouble
could
also
eXist
10
the
carburetor
Idle
crrcult
Check
Idle
mIXture
adjustment
and
check
for
restnctions
m
the
idle
crrcUlt
5
Engme
misses
at
high
speed
only
Problems
could
be
ill
the
fuel
or
IgOltlon
systems
heck
accelerator
pump
operation
fuel
pump
dehvery
fuel
hnes
etc
as
descnbed
under
Fuel
System
Troubleshootillg
Also
check
spark
plugs
and
wrres
6
Low
performance
at
all
speeds
poor
acceleratIOn
Trouble
usually
ill
IgOltlon
or
fuel
system
Check
each
With
the
appropnate
troubleshooting
pro
cedure
7
ExceSSive
fuel
consumptIOn
Could
be
caused
by
a
Wide
variety
of
seemmgly
unrelated
factors
Check
for
clutch
shppage
brake
drag
defective
wheel
beanngs
or
poor
front
end
alignment
Check
IgOltlOn
system
and
fuel
system
8
011
pressure
lamp
does
not
light
when
IgmtlOn
switch
IS
on
Check
the
alternator
warning
lamp
If
it
ISn
t
on
either
go
to
Step
1
Chargmg
System
Trouble
shootlOg
If
only
the
oil
pressure
lamp
IS
off
open
the
englOe
compartment
hd
and
locate
the
oil
pressure
sender
on
the
block
near
the
oil
filter
Make
sure
the
wrre
is
connected
to
the
sender
and
makmg
good
contact
Pull
the
wrre
off
and
ground
it
If
the
lamp
hghts
replace
the
sender
If
the
lamp
does
not
light
replace
the
lamp
9
011
pressure
lamp
lights
or
flickers
when
engme
IS
runmng
Indicates
low
or
complete
loss
of
oil
pressure
Stop
the
englOe
unmedmtely
coast
to
a
stop
With
the
clutch
dISengaged
Tlus
may
simply
be
caused
by
a
low
oil
level
or
an
overheatmg
en
glOe
Check
the
oil
level
and
fan
belt
tensIOn
Check
for
a
shorted
oil
pressure
sender
with
an
ohmmeter
or
a
contlOulty
tester
Remove
and
clean
the
oil
dipstick
and
check
oil
level
and
condition
RepleOlsh
or
replace
the
oil
as
re
qurred
Listen
for
unusual
nOISes
mdlcatmg
dam
aged
beanngs
etc
Do
not
re
start
the
engine
until
you
know
why
the
hght
went
on
and
are
sure
that
the
problem
has
been
corrected
IGNITION
SYSTEM
This
procedure
assumes
the
battery
IS
ill
good
enough
condition
to
crank
the
engme
at
a
normal
rate
Page 214 of 252
44
y
l
l
42
43
r
48
cr
23
41
f
Jj
it
d
F
1L
f7
IF
f
0
l
Q
U
lJ
37
1
2S
26
38
A
3S
36
G
21
Turn
signal
and
dimmer
switch
22
Turn
signal
switch
knob
23
Stop
light
switch
24
Door
switch
25
WarnIng
buzzer
26
Warning
buzzer
28
Fuse
block
29
Fuse
block
cover
30
Fuse
10
ampere
31
Fuse
20
ampere
32
Fuse
30
ampere
33
Machlnescrew
34
Lock
washer
35
Horn
hIgh
pitch
36
Horn
low
pitch
37
Machine
acrew
38
Lock
washer
39
Horn
relay
40
Lower
beem
relay
41
Inhibitor
switch
42
Screw
43
Flasher
unit
44
Screw
48
Bracket
o
i