1979 DATSUN 210 manual transmission

SO
B
T
D
C

650

rpm

Non
California
models

except
Canada

100
B
T
0
C
650

rpm

Canada
models

Note
On
FU

models

ignition
timing

t
under
a

con4ition
where

distnoutor

vacuum
hose

is
discon

nected

9
On

FU
models

proceed
as
fol

lows

I
Remove
blind

plug
from
dis

tributor
vacuum
hose
and
connect

hose

to
distributor

diaphragm

EC370A

Fig
ET
15

Connecting
Distributor

Vacuum
Hose

2
If

engine
speed
varies
in
this

state
set
idling
speed
at

specified
value

with
throttle

adjusting
screw

10
At

about
10

minutes
after
en

gine
is

run
at

idling
speed

adjust
idle

adjusting
screw
so
that
CO

percentage

is
at

specified
level

CO

percentage

Manual
transmission

2
t
1
at
700

rpm

Automatic
transmission

in
0

position

2
t
1
at
650

rpm

II

Repeat
procedures
as
described

in

steps
6
7
and

10
above
so
that
CO

percentage
is

at

specified
level
Check

ing
idle
CO
in

step
10
can
be

carried

out

right
after

step
7
Engine
Tune

up

11
Race

engine
1
500
to
2
000

rpm
two

or
three
times
under

no
load

and

make

sure
that

specified
CO

per

centage
is
obtained

13

I
Remove

cap
and

connect
air

hose
to

air
check

valve

Except

Canada
and
FU

models

2

Remove

p
and

connect
air

hose
to
air
induction

pipe
Canada

and

FU
models

If

engine
speed
increases

readjust
it

to
the

specified
speed
with
throttle

adjusting
screw

14
On
FU
models

proceed
as

follows

Open
throttle
valve

by
tuming

throttle
shaft

then
close
it

And
make

sure
throttle

valve
switch
of
fuel

shut

off

system

operates
click
sound
is

heard

or

continuity
turns
to

OFF

when

throttle
valve
is

closed

If
not

adjust
throttle
valve

switch

In
air
conditioner

equipped
models

inspection
in

step
13
should
be

carried
out
when

engine
is

running

with
air
conditioner
in
ON

F

l
CD
is
actuated

Refer
to

Checking
Fuel
Shut
off

System
in
this
section

CO
Idle

adjuatment

without
CO

mater

If
CO

meter
is
not

available
the

following
procedures

may
be

used

I

Check
carburetor

pipes
for

proper

comiection

2
Warm

up
engine
until
water
t
m

perature
indicator

points
to
the

middle

of

gauge
The

procedure
to

warm

up

engine
is
not

specifically
recom

mended
Either

driving
car
or

operat

ing
engine
at
no

load
will
be

good

3
Make

sure
that
water

temperature

indicator

points
to
the

middle
Further

keep
engine

running
at
about
2
000

rpm
for

about
5
minutes

without

applying
load
to

engine
in
order

to

stabilize

engine
condition

Engine

hood
should
be

open

4

Run

engine
for
about
10

minutes

at

idling

speed
During
this

10

minutes

proceed
as
described
in

steps

5
to
9
below

5

I
Disconnect
air

hose
from
air

check
valve
and

install

cap
on
air

ET
8
check
nlve

Except
Canada
and
FU

models

2
Disconnect
air

hose
from
air

induction

pipe
and
install

cap
on
air

induction

pipe
Canada
an
FU

models

3
On

FU
models

disconnect
dis

tributor

vacuum
hose

at
distributor

diaphragm
ide
and

plug
hose
with

blind

plug

6
Race

engine
1
500
to
2
000

rpm

two
or

three
times

under
no
load
then

run

engine
for

one
minute

at

idling

speed

7

Adjust
throttle

adjusting
screw
to

that

engine
speeds
are

as
indicated

below

Engine
speed

Manual
tra
mi
ion

except
FU
models

740

rpm

Automatic

transmission

in
0

position

665

rpm

FU
models

765

rpm

8
Check

ignition
timing
if
neces

sary
adjust
it

to
the
value

required
by

specifications
This

operation
need
not

be
carried
out
at
1

600
km

1
000

miles
service

9
On
FU
models

proceed
as
fol

lows

I
Remove
blind

plug
from
dis

tributor
vacuum
hose
and
connect

hose
to

distributor

diaphragm

2

If

engine
speed
varies
in
this

state
set

idling
speed
at

specified
value

given
in

step
7
with

throttle

adjusting

screw

10
At
about
10
minutes
after
en

gine
is

run
at

idling
speed
adjust
idle

adjusting
screw
until
maximum

rpm
is

obtained

II

Repeat

procedures
as
described

in

steps
6
7
and
10

above
until

engine

speed
at
best
idle
mixture
is

as

specified
in

step
7

Adjustment
in

step

10
can
be
carried
out

right
after

step

7

12
Turn

the
idle

adjustIng
screw

clockwise
until

engine

speed
drops
by

value

given
below

Engine
speed
drops

Manual
transmission

except
FU
models

IBnition
and
fuel

system

Ignition
timing

Manual
transmission
models

Automatic
transmission

models

in
D

position

1

Spark
plug

Gap
U
s
A

models

Canada
models

FU
models

High
tension

cable
resistance

CO

percentage
at

idling
speed
No
air

Manual
transmission
models

Automatic
transmission
models

f

in
D

position

Evaporatlv
emission
control

system

Supplied
pressure

l

Pressure
variation

TIGHTENING
TORQUE

Valve
rocker

adjusting
nut

Spark
plug
Engine
Tune

up

degree
rpm

degree
rpm

mm
in

mm
in

mm
in

ohm

rpm

rpm

mmH29
inH20

mmH20

inHP

kg
m
ft
lb

kg
m
ft
lb

ET1S
SO
B

T
D

C
j700
rpm

California
FU

models

T
D

CJ700
i

m

r
Non
California
Canada

models

SO
B
T
D

C
j6S0
rpm

California
models

80
B

T
D
C
j6S0

rpm

Non
California
models

ex

cept
Canada

100
B
T
D

C
j6S0
rpm

Canada
models

1

0
to
l
l
0
039
to
0

043

0
8
to
0

9
0
031

to
0
035

LI
to
1
3
0
043

to
O
OSI

an

3O
OOO

2
r

1
700

2
r
1
6S0

400

IS
7S

less
than
2S
0

98

I

f
r

1
6
to
2
2

12
to
16

1
5

to
2
0

11
to
14

jf

0

u

V

O
I

MAX
Ii

1i

i

iT

1
I

I

11

1

i

MINij

o

f

G

p

rl

MAX
ii
i

p

It

ot

MINi
II

L
Cooling
System

l

CQ074

Pressure
relief
valve

opens

f

C007S
Vacuum
valve

opens
INSPECTION

1
Check
the
amount
of

coolant
in
the

reservoir
tank
If
the
coolant
level

is

below

the
MIN
level
remove

the
re

servoirtank
ruler

cap
and
add

enough

oolant
to
reach
MAX

level

If
the
reservoir
tank
is

empty

check

the
coolantlevel
in
the

radiator

If
the
coolant
in

the
radiator
is

insuf

ficient

pour
it
into

radiator

up
to
the

radiator

cap
and

also

pour
it
into
the

reservoir

tank
until
MAX

level

If
the

coolant
in
the
reservoir
tank

d
ecreases

abnormally

rapid
check
for

a
leak
in
the

cooling

system

REMOVAL
AND

INSTALLATION

1
Reservoir
tank
is

only
inserted
to

reservoir
tank

bracket
and
can
be

easily
removed

To
install
reservoir
tank
reverse
the

order
of

remova

Fig
CO
12

Opefation
of
ReserVoir
Tank

SERVICE
DATA
AND

SPECIFICATIONS

Thermostat

Valve

opening

temperature
Oc
OF

Maximum

valve
lift

mmjOC
in
oF

Radiator

Type

Manual
transmission

Automatic
tralUJ1lission

Cap
relief

pressure
kg
cm2

psi

Testing
pressure

kg
cm
2

psi

Fan

Fan

belt
deflection

mm
in

cO

6
Temperate

type
Frigid
type
Tropical
type

82

180
88

190
76
5

I
70

8

95
8
loo
8
90

0
3
I

203
0
31j2
i
2

0
31
194

Corrugated
fm

type

Corrugated
fm

type
equipped
with
oil
cooler

0
9

I
3

1

6
23

8
to
12

0
31
to
0
47

I

Secondary
slow
air

bleed

2

Secondary
main
air
bleed

3

Secondary
main
nozzle

4

Primary
main
nozzle

5

Primary
main

air
bleed

6

Primary
slow
air
bleed

7

Primary
slow

jet

8

Primary
main

jet

9
Idle
nozzle

10
Primary
throttle
valve

II

Auxiliary
valve

12
Seco
dary
throttle
valve

13

Secondary
main

jet

14

Counterweight

IS

Secondary
slow

jet

EF419A

Fig
EF
24
At
Full

Open
High
Speed
Engine
Fuel

Secondary
slow

system

Step
system

The
construction
of
this

system

corresponds
to

the

idling
and
slow

system
of
the

primary
system

This

system
aims

at
the

power

filling
up
of
the

gap
when

fuel

supply

is
transferred
from

the

primary
system

to
the

secondary
system
The

stepport

is
located

near
the

auxiliary
valve
in
its

fully
closed
state

ANTI

DIESELING
SYSTEM

The

carburetor
is

equipped
with
an

anti
liese1i

lg
solenoid

valye

As
the

ignition
switch
is

turned
off

the
valve
is

brought
into

operation

shutting
off
the

supply
of

fuel
to

the

slow
circuit

The

following
figure
shows
a
see

tional
view

of
this

control

An

ti
dies

eling
solenoid
valve

Ignition
switch
OFF

ON

t

L
li

FLOAT
SYSTEM

There
is

only
one
float
chamber

while
two
carburetor

systems

primary

and

secondary
are

provided

Fuel
fed
from
the
fuel

pump
flows

through
the
filter
and
needle
valve
into

the
float

chamber
A
constant
fuel

level
is
maintained

by
the

float
and

needle
valve

Because
of

the
inner
air

vent

type

float

chamber
ventilation
fuel
con

sumption
is

not
affected

by
dirt
ac

cumulated
in

the
air
cleaner
Ignition
switch

Q

1

T
Battery

niT

EC
3

Fig
EF
25

Anti
dieseling
Solenoid
Valve

The
needle
valve
includes

special

hard

steel
ball
and
wiD

not
wear
for
all

its

considerably

long
use

Besides
the
insertion
of

a

spring

will

prevent
the

flooding
at

rough
road

running

THROTTLE
OPENER

CONTROL
SYSTEM

T
O
C
S

Except
FU

model

The
function

of
the
throttle

opener

is
to

open
the

throttle
valve
of
the

carburetor

slightly
while
the
car
is
in

EF
10
deceleration

During
deceleration

the

manifold
vacuum
rises
and

the

quan

tity
of
mixture
in
the

engine
is

not

suffICient
for
normal

combustion
to

continue

4
consequently
a

great

amount
of

unburned
HC
is
emitted

Carburetors

equipped
with

the

throttle

opener
supply
the

engine
with

an

adequate
charge
of

combustible

mixture
to
maintain

proper
combus

tion

during
deceleration

resulting
in
a

dramatic
reduction
in
HC

emission

The

system
for
the

manual
trans

mission
model
consists
of

servo
dia

phragm
vlicuum

control
valve
throttle

opener
solenoid
valve

spee
l

detecting

switch
and

amplifier
On

the
auto

matic

transmission
model
an
inhibitor

and
inhibitor

relay
are
used
in

place
of

speed

detecting
switch
and

amplifier

on
the
manual
transmission

model
An

altitude

corrector
fitted
to
vacuum

control
valve

serves
to

automatically

regulate
the

operating
pressure
in

the

system
with

variation
of

atmospheric

pressure

T
o
C
S
n

operatIon

At
the

moment

when
the

manifold

vacuum
increases
as

occurs

upon
de

celeration

the
vacuum

control
valve

opens
to
transfer

the
manifold

vacuum

to
the
servo

diaphragm
chamber
and

the
throttle
valve
of
the

carburetor

opens

slightly

Under
this

condition
a

proper

amount

of
fresh
air

is
sucked

into
the

combustion
chamber
As
the
result

complete
combustion
of
fuel
is

as

sisted

by
this
additional
air

and
the

amount

of
H
C

contained
in

exhaust

gases
is

dramatically
reduced

Throttle

Clpener
sol
nold

valve

operation

Manual

transmission
models

The
throttle

opener
solenoid
valve

is
controlled

by
a

speed

detecting

switch
which
is

actuated

by
the

speed

ometer
needle

As
the

car

sp
ed
falls
below
16

km
h
10
MPH

this
switch
is
acti

vated

producing
a

signal

The

signal
is

led
to
the

amplifier
so

that
the

signal
can
be

amplified
to

a

degree

large
enough
to
actuate
the

throttle

opener
solenoid
valve

The
throttle

opener
solenoid
valve

is

actuated
and
the

servo
diaphragm

chamber
is

opened
to
the

atmosphere

In
this
case

the
seIVo

diaphragm

does

not

opera
te
Engine
Fuel

Automatic
transmission
models

As

long
as
the

shift
lever
is
in
the

N

or
p

position
the
inhibitor

switch
on
the
transmission
is
turned

on
and
the

throttle

opener
solenoid

valve
is

actuated
Under
this
condition
the
seIVo

diaphragm
does
not

operate

because
of

the
same
reason
as
men

tioned
for
the

manual

transmission

model

ON
Car

peed
betow

t6
km
h

to

mph

OFF
Car

peed
above
16
km
h

to
mph

To
intake

manifold

j

lJl
11
1

ti

i
ljn

L

o

1

Servo

diaphragm

2

Vacuum
control
valve

3
Altitude

corrector

4
Throttle

opener
solenoid
valve

5

Inhibitor
switch
N
p

ON
for
automatic

transmission

6

Speed
detecting
switch
below

10
MPH

ON
for
manual

transmission

7

Amplifier

8

Ignition
switch

9

Primary
throttle
valve
Note

FUEL

SHUT
OFF
SYSTEM

The

fuel
shut
off

system
is

to
shut

off

the
fuel

during
deceleration

there

by

reducing
fuel

consumption
This

system
also

helps
prevent
a

tempera

ture
rise
in
the

catalytic
converter

during
long
periods
of

deceleration

The

major
parts
of
the

system
are

an
anti

dieseling
solenoid
a
neutral

detecting
switch
a

throttle
valve

switch
and

an

engine
revolution

switch
e

1

l
6

I

I

I

I

I
I

I
I

I

l

L
I

Broken
tine

applies
only
to
Automatic

Transmission
7

Anti
dieseling
solenoid

Electric
current

OFF
ON
valve

I

I

h

L

Battery

I

Neutral

detecting
switch

l

2

Throttle

valve
switch

3

Engine
revolution
switch

4

Transistor

ignition
unit
o

Ignition
switch
EF105A

Fig
EF
26
Throttle

Opener
System

ill

Ignition
coil

U
EF846

Fig
EF

27
Anti
dieseling

Solenoid
Valve

EF
11

FAST

IDLE

I
Remove
carburetor

assembly

from

engine

2
Remove

bi
metal
cover

3

Place
fast
idle
arm
on
second

step

of
first
idle
cam
Then

adjust
fast
idle

adjusting
screw
as
shown
at
A
in

illustration

The
clearance
A

should
be

specified
value
in
the

following
table

4

To
check
fast
idle
cam

setting
by

engine
speed
proceed
as
follows

Warm

up
engine
sufficiently
Set

fast
idle

cam
at
2nd

step
and
read

engine

speed

Fast
idle
cam
is

properly
set
if

engine
speed
is
within

above

specifica

Hons

VACUUM
BREAK

I
Close
choke

valve
completely

2
Hold
choke
valve

by
stretching

rubber
band
between
choke
shaft
lever

and

stationary

part
of

carburetor

3
Push
vacuum
break

stem
with

plie
and

puD
fully
straight

4
Under

this
condition

adjust
gap

shown
at
8
in

illustration
between

choke

valve
and
carburetor

body

Clearance
Bu

All
model

except
FU
model

1
80
to
1
98
mm

0
0709
to

0
0780
in

FU

model

1

98
to
2
16
mm

0
0780
to
0
0850

in
Engine
Fuel

Clearance
A

mm
in
Engine
speed

rpm

Manual
transmission
0
73

to
0
87

0
0287
to

0
0343

1

00
to
1
14

0
0394
to

0
0449
2

400
to
3
200
1
900
to
2

700

Automatic

transmission

Fast

idle
earn

steps

g
g
2
5
t

to
J

A
ti

Ogc
j
jdle
adjusting
screw

o

0

II
r

Throttle

chamber

EF098A

Fiil
EF
35

Adjusting
Fast
Idle

@
B

@

cv

Push

I

4

Choke
valve

5

Vacuum
break
stem

EF885
1
Rubber
band

2

Vacuum
break

stem

3
Vacuum
break
rod

E
F099A

Fig
EF
36

Adjwtirig
Vacuum
Break

EF
15

Engine
Fuel

Upon
completion
of

adjustment

make
sure
that

link

system
opera
tes

smoothly
It
is

necessary
to
remove
Carburetor

from

engine
in

adjusting
this
accelera

tor

pump
stroke
limiter

1

Remove
carburetor

from

engine

2

Insert
a
l
l

to
I
S
mm
0

043
to

0
059

in
feeler

gauge
a

piece
of

round

stock
of

proper
thickness
is

best

betwee
l
primary
ca

buretor

throat
and
throtile
valve
ACCELERATOR
PUMP

STROKE

LIMITER

In

rmal
service

operation
this

limiter
should

not
be
removed
or

bent

In
J

0

ID

@

l

1IJl

J
J
00

I
f

oj

G
1
3
IO
2

mm
0
051
IO
004
in

Fig
EF
44
AdjlUting
Acce
rator

Pump
Stroke
Limiter
1
Primary
carburetor
throat

2
Throttle
valve

3
Lever

4

Limiter
5
Piston

6

Pin

7
Feeler

gauge

E
F048A

3

With
throttle
valve
held

open

properly
by
feeler

gauge
check

that

lever

barely
contacts

pin
If
lever
and

pin
are
not
in

contact

bend
limiter
until

proper
contact
is

made

OZ
00
A

fID

1

S

@

4
1

Full

travel
of

lever

f

EF049A
A
1
Lever

2
Correct

contact
area

3
Limiter

4
Pin

5

Pistgn
6
Correct
cont
ct
area

7
Lever

8

Limiter

9
Pin

10
Piston

Fig
EF
45
Stroke
Limiter

DASH

POT

I

Idling
speed
of

engine
and
mix

ture
must

be
well

tuned

up
and

engine

sufficiently
warm

2
Turn
throttle
valve

by
hand
and
read

engine
speed
when
dash

pot
just

toucnes

stopper
lever

3

Adjust
position
of
dash

pot
by

tuming
nut
until

engine
speed
is

in
the

specified

range

California

models
Non

Califomia

models

Automatic

transmission
1

900

to
2

100
1
900
to

2
100

Manual
transmission

1
900

tp
2

100
2
300

to
2

500

FU
model

1

900
to
2

100

EF

t8
1
Lock
nut

2
Dash

pot

E

F730

F
ig
EF
4

Ll
dj

ting
h

P
ot

4

Tighten
lock
nuts

5

Make
sure
that

engine
speed

drops
smoothly
from
2

000

to
1
000

rpm
in

about
three

seconds

ACCELERATING
PUMP

I

Visually
inspect

accelerating

pump
cover

for

any

sign
of
fuel

leaks

2

If
fuel

leaks
are
found

check

gasket
and

replace
if

necessary

3

Turn
throttle

valve

by
hand

make
sure
fuel
is

injected

through

injector
nozzle

Note
To

check
or

fuel

injection

peep
into
nozzle
rom

upper
side

while

directing
flashlight
beam
to

ward

primary
barrel

ANTI
DIESELING

SOLENOID

VALVI

Start
the

engine
and

keep
at

idling

speed
Disconnect
the

lead
w

e
for
the

anti
dieseling

solenoid
at
the

connec

tor

If
the

engine
does

not

stop
when

the
lead

wire
is

disconnected
the

solenoid
is

stuck
Reconnect
the
lead

wire
and

start
the

engine
Then
turn

off
the

ignition
switch

If
the

engine
does
not

stop
when

the

ignition
switch
is
turned
off

this

indicates
that
the

striking
solenoid

valve
is

stuck
or

short

circuited

If
the

harness
i
in

good
condition

replace
the
solenoid
valve
as
a
unit

1

Ignition
switch

2

Amplifier

3

Speed
switch
Note

a

Tightening
torque
is
1
8

to
2
2

kg
m
13
to
16
ft
Ib

b
After

replacement
start

engine
and

check
to
be
sure
that
fuel
is
not

leaking
and
that
anti
dieseling
sole

noid
i

in

good
condition

EFOSOA

Fig
EF47
Checking
Anti
dieaeling

Solenoid

l
SJ
Engine
Fuel

THROTTLE
OPENER

CONTROL
SYSTEM

When

idling
speed
is
too

high
and

does
not

drop
to

idling
speed
the

throttle

opener
control

system
should

be

checked

Manual
transmission
models

I

Check
for

continuity
between
A

and
8
terminals

specified
in
function

check

connector
with

ignition
switch

OFF

If

continuity
does
not
exist

sole

noid

may
be

faulty
Replace
throttle

opener
control
valve

assembly

e

1J
3

o
0

5

4

Solenoid

5
F
nction

check

connector

EF434A

Fig
EF
48
Circuit

Diagram
for
Throttle

Opener
Control
System
MIT

2

Turn
on

ignition
switch
and

check

voltage
across
terminals
A
and

8
l2V

battery
voltage
should

appear

in

this

step

If
not

check
fuse
or

amplifier

3

Keep
ignition
switch
ON

remove

speedometer
cable
from
combination

meter
Then

spin
speedometer
in

com

bination
meter
with

fingers
and
con

firm
that
the

speedometer
pointer

indicates
more
than
16
km

h

10

MPH

temporarily
Voltage
between

A

and
8
terminals
should
be

chang

ed

as
follows
More
than
10

miles
OV

Less
than
10
miles
12V

If

not

amplifier
or

speed
detecting

switch

may
be

faulty
replace
parts

with

new
ones

Automatic
transmission
models

I
Check
for

continuity
between
A

and
8

terminals

specified
in
function

check

connector
with

ignition
switch

OFF

EF
19
If

continuity
does

not
exist
sole

noid

may
be

faulty
Replace
throttle

opener
control
valve

assembly

If
t

r

If

I

Inhibitor
switch

N
p

ON

2
Solenoid

3
Function
check

connector
EF43SA

Fig
EF

49
Circuit

Diagram
for

Throttle

Opener
Control

System
AfT

2
Turn

ignition
switch
ON
check

voltage
across
A

and
8
terminals

Voltage
between
two
terminals

should
be

changed
as
follows

If
not

replace
inhibitor
switch

N
or
p

position
OV

Other
than

N

and
p

position
l2V

THROTTLE
OPENER

OPERATING
PRESSURE

I
Remove
harness
of
solenoid
valve