1979 DATSUN 210 fuel

t
IGHTENING

TORQUE

Cylinder
head
bolt

Rocker
shaft
bracket
bolt

ain

bearing
cap
bolt

Flywheel
fixing
bolt

Drive

plate
fixing
bolt
Al4

AlS

Connecting
rod

cap
nut

Camshaft

sprocket
bolt

Locating
plate
bolt

Valve
rocker

adjusting
nut

Oil
strainer
bolt

Oil

pan
bolt

Oil

pan
drain

plug

Timing
chain

cover
bolt

Crank

pulley
bolt

Water

pump
bolt

Fuel

pump
bolt

Spark
plug

Engine
mounting
securing
bolt
Engine
Mechanical

Unit

kg
iii

ft
lb

7

0
to

7
5
51

to
54

2
0t02
5

14to
18

5

0
to

6
0
36

to
43

8

0
to
9
0
58
to

65

8
0
to
9
0

58
to

65

8
5
to
9
5
61
to
69

3
2
to
3

8
23
to

27

4
0

to
4
8

29
to

35

0

5
to

0
8

3
6
to
5
8

1
6
to
2
2
12to

16

0
9
to
I
4

6
5
to

10
1

0
4

to
0

6
2

9
to
4
3

2

0
to
3

0
14
to
22

0
5
to
0
7
3

6
to
5
1

15to
20

l08
to
145

0
9
to
I
4

6
5
to

1O
l

0
9
to
I
4
6
5
to

10
1

1
5
to
2

0
11

to
14

1
9
to
2
5
14to

18

EM
30

Condition

Waterpurnp

knocking

II
Othw

mllChani

troubl

Stuck

valve

Seized
valve

seat

Excessively
wom

cylinder
and

piston
Engine
Mechanical

Probab
Ie
cause

Improper
shaft
end

play

Broken

impeller

Improper
valve
clearance

Insufficient
clearance
between
valve
stem
and

guide

Weakened
or
broken
valve

pring

Biting
or

damage
of
valve
stem

Poor
fuel

quality

Il1
prop
r
valve
clearance

Weakened
valve

pring

Thin
valve
head

edge

Narrow
valve

seat

Overheating

Over

speeding

Sticked
valve

guide

Shortage

ofengine
oil

Dirty
engine
oil

Poor
oil

quality

Overheat

Wrong
assembly
of

piston
with

connecting
rod

Improper
piston
ring
clearance

Dirty
air
cleaner

Too
rich
mixture

Engine
over
run

Stuck
choke
valve

Over

choking

EM
32
Corrective

action

Replace

Replace

Adjust

Clean
stem
or
ream
the

guide

Replace

Repil
ce
or
clean

Use

good
fuel

Adjust

Replace

Replace
valve

Reface

Repair
or

replace

Drive
at

proper
speed

Repair

Add
or

replace
oil

Check
oil
level
on

daily
basis

Clean
crankcase

replace
oil
and
re

place
oil
ftIter
element

Use

proper
oil

Repair
or

replace

Repair
or

replace

Adjust

Clean

periodically

Adju
t

Drive

correctly

Clean
and

adjust

Start
in
correct

way

DATSUN
210
Model
8310
Series

SECTIONEF

ENGINE
FUEL

CONTENTS

AUTOMATIC
TEMPERATURE

CONTROL
A
T
C
AIR
CLEANER

DESCRIPTION

OPERATION

REMOVAL
AND
INSTAllATION

INSPECTION

IDLE
COMPENSATOR

DESCRIPTION

INSPECTION

FUEL
FILTER

DESCRIPTION

FUEL
PUMP

OPERATING
TEST

REMOVAL
AND
INSTAllATION

DISASSEMBLY
EF
2

EF
2

EF
2

EF
3

EF
4

EF
5

EF
5

EF
5

EF
6

EF
6

EF
6

EF
6

EF
7

EF
7
INSPECTION

ASSEMBLY

CARBURETOR

DESCRIPTION

STRUCTURE
AND
OPERATION

INSPECTION
AND
ADJUSTMENT

MAJOR
SERVICE
OPERATION

TROUBLE
DIAGNOSES
AND

CORRECTIONS

SERVICE
DATA
AND

SPECIFICATIONS

GENERAL

SPECIFICATIONS

INSPECTION
AND
ADJUSTMENT

TIGHTENING
TORQUE
EF
7

EF
7

EF
B

EF
B

EF
B

EF
14

EF
23

EF
30

EF
32

EF
32

EF

32

EF
34

Engine
Fuel

AUTOMATIC
TEMPERATURE
COtirROL
A
T

C

AIR
CLEANER

DESCRIPTION

U

S
A

mode
18

ExC
FU

model

I

C1J
Cana
ia
and
FU

models

I
Air

relief
valve
Non

alifornia

models

2

Air
hole
for
T
C

S

3
P

C
V

mter

4
Air

hole
for
A
B

valve
5
Idle

compensator

6
Outlet
for
C
A

C
valve

California
model

7

Temperature
seIl50r

8

Heat
control
valVe

EF415A

Fig
EF
l
A
T
C

Air
Cleaner
U
S
A
model

except
FU
model
8
3

1

Air
hole

for
T

C
S

2

Air
induction
valve
and

ftIter

3
P

C
V

mtet
Air

hole
for
A
B

valve

Idle

compen
ator

Temperature
sensor

Heat
control
valve

EF041A

Fig
EF
2
A
T
C
Air
Cleaner
Canado
ond
FUmodel

The

automatic

temperature
control
system
of

the
air

cleaner
is

control
ed

by
the
inlet
air

temperature
and
the

load
condition
of
the

engine
The
inlet
air

temperature
is
detected

by
th

sensor
and
the

vacuum
motor
is

actu

ated

by
the

engine
intake
vacuum
OPERATION

Engine
Under
hood
air

temperature
Sensor
vacuum
at

vacuum
motor

side
Air

con
trol
valve

operation
Sensor

operation

Below
380e

IOO
F
Below
40

mmHg

1
57

inHg
Open
cold
air

AI4
A15
Above
160

mmHg

6
30

inHg
Closed

Closed
hot

air

38
to

S40C

100

to
l290F
Partially
open

cold
air
hot
air
Partially
open

Above
550e

1310F
Open
cold
air

Open

HOT
AIR

OPERATION

When

the

engine
intake
air

tempera

ture
is

low
the

sensor
air
bleed
valve

remains
in

the
closed

position
and

establishes
vacuum

passage
betw

n
the
intake
manifold
and

vacuum

motor
With

this
condition
the
vacu

um
at

the
intake
manifold
side

actuates
the
air

control
valve
attached
to
the

vacuum
motor

diaphragm
to

introduce
hot
air
into
the
air
cleaner

through
the
hot
air

duct
on
the
ex

haust
manifold

EF
2

Hot

air
Engine
Fuel

To
manifold
I
Air
inlet

pipe

2
Air

con
trol

valve

3
Hot
air

pipe

4

Diaphragm

5
V

Bellum
hose

6

Diaphragm
spring

7
Air

bleed
valve

closed

8

Temperature
sensor

assembly

Fig
EF
3

Hot
Air

Delivery
Mode
During
cold

engine
operation
EC007

COLD
AIR
OPERATION

1
When

the
vacuum
is
small
or

when
the

engine
is

operating
under

heavy
load
the

air
control
valve

opens

widely
irrespective
of
the

temperature

around
the
sensor
to
introduce
the

cold
air
for
increased

power
of
the

engine

2
When
the

engine
intake
air
tem

Cold
air

I
L
CD

mf

LlF

JII

1
perature
is

high

The
s
ns
r
air
bleed
valve

opens

fully
to
break
the
vacuum

passage

between
the
intake
manifold
and
the

vacuum

motor
Due
to
the
force
of
the

vacuum
motor

diaphragm
spring
tne

air
control
valve
closes
the
hot
air

pipe

of
the

air
cleaner
and
introduces
the

cold
air
See

Fig
EF
4

I

manifold
I
Air
nlet

pipe

2
Air
control
valve

3
Hot
air

pfpc

4

Diaphragm

5
Vacuum
hoses

6

Diaphragm
spring

7
Air
bleed
alve

fully
open

8

Temperature

assembly

EF715

Fig
EF
4
Cold
Air

Deliuery
Mode

During
hot

engine
operation

TEMPERATURE
SENSOR

The

temperature
sensor
is
attached

to

the
inside
of
the
air
cleaner
The

bi
metal
built
in
the

sensor
detects
the
engine
intake
air

temperature
and

opens
or

closes
the
vacuum

passage
in

the

sensor

I
Protector
cover

2

Screw

3

Adjusting
frame

4
Air

temperature
bi
metal

5
Rivet

6
Valve

seat
frame

7

Lower
frame

8
Air
bleed
valve

9
Gasket

EF206

Fig
EF

5
Temperature
Sensor

EF
3
VACUUM
MOTOR
AND

AIR
CONTROL
VALVE

The

vacuum
signal
from
the

tem

perature
sensor
acts

upon
the
vacuum

motor

diaphragm
The
valve

shaft
at

tached
to
the

diaphragm
is
then
moved

up
or
down

in

response
to
the
vacuum

on
the

diaphragm
This
movement
of

the
valve

shaft
actuates
the
air

control

valve
to
control
the

temperature
of
the

air
to
be
introduced
into
the

air

cleaner

@

@

@
I
Valve

spring

2

Diaphragm

3

Retainer

4
Valve
shaft

EF207

Fig
EF

6
Vacuum
Motor

REMOVAL
AND

INSTALLATION

AIR
CLEANER

I
Loosen
bolts

securing
air
cleaner

to
air
cleaner
bracket

2
Loosen
air
cleaner

lock
bolt
and

remove
air
cleaner
from
carburetor

Disconnect
the

following
hoses
when

dismounting
air
cleaner

I

Fresh
air
duct

2

Hot
air
duct

3
Vacuum
hose
Sensor
and

idle
com

pensator
to
intake

manifold

4
Hose
Air

pump
relief

valve
Non

California
models

except
Canada

5
Air

induction
hose
Canada
and

FU
models

6
Hose
A
B
valve
to

air
cleaner

7
Hose
Air
cleaner
to
throttle

opener

or
vacuum
switch

8
Blow

by
hose
Air

cleaner
to
rocker

cover

3
To
install

reverse
the
removal

procedure

TEMPERATURE
SENSOR

Removal

I

Using
pliers
flatten

clip
con

necting
vacuum

hose
to

sensor
vacuum

tube

1

Pipe

2
Catch

3
Fixed
with

adhesive

4
Hose

5
Tab

6

Clip

7
Gasket

EC019

Fig
EF
7

Removing
Seruor

2
Disconnect
hose
from

sensor

3
Take
off

clip
from
sensor
vacuum

tube
and
dismount
sensor

body
from

air
cleaner

Note

The

gasket
between

sensor
and

air

cleaner
is
bonded
to

the
air

cleaner

side
and

should
not

be

removed

Installation

Mount
sensor
on
the

specified

position

2

Insert

clip
into

vacuum
tube
of

sensor
After

installing
each
vacuum

hose

secure
hose
with
the

clip

Note
Be

sure
to
install
vacUl
11n

hose

correctly
Correct

position
is
R
H

side
to

Ntisan

mark
at
the

top

face
of
sensor
for
intake
manifold

L

H
side
for

Deuum
motor

VACUUM

MOTOR

1

Remove

screws

securing
vacuum

motor

to
air
cleaner

2

Disconnect

valve
shaft

attached

to

vacuum
motor

diaphragm
from
air

control
valve

and

remove

vacuum

motor

assembly
from
air

cleaner

3
To
install

reverse
the

removal

procedures
Engine
Fuel

Fig
EF

8
Removing
Vacuum
Motor

INSPECTION

AIR

CLEANER
FILTER

Viscous

paper

type
air

cleaner
filter

does

o
ot

rt

quire
any
cleaning
opera

tion

until
it

is

replaced
periodically

Brushing
or

blasting
operation
will

cause

clogging
and
result

in
enrich

ment

of
carburetor
mixture

and

should
never
be

conducted
For
reo

placement
interval
of
air

cleaner
filter

refer
to

Maintenance

Schedule

AUTOMATIC

TEMPERATURE

CONTROL
SYSTEM

Engine
failures

resulting
from
a

malfunctioning
A
T
C

system
are

manifest

during
cold
weather

opera

tion
Such
failures

include

Engine
stall
or
hesitation

Increase
in
fuel

consumption

Lack
of

power

If
these

phenomena
should

occur

check

A
T
e

system
as

described
in

the

following
before

carrying
out

inspection
of

carburetor

I
Check
that

vacuum
hoses
are

se

l

urely
connected
in
correct

position

2

Check
each
hose

for
cracks
or

distortion

3

Check
A
T

C

system
for

proper

function
as

follo
ys
Confirm
that

engine
is

cold
before

starting
test

With

engine
topped
disconnect

fresh
air

duct
if
so

equipped

Place
a
mirror
at
the
end

of
air

cleaner
inlet

pipe
as
shown
and

check

to
see
if
air
control
valve

is
in
correct

position

EF
4
Fig
EF
9

Inspecting
Valve
Po

man

Air
control
valve
is

in
correct

posi

tion
if
its
cold
air
inlet

is

open
and

hot

air
inlet
is

closed

4
Start

engine
and

keep
idling

Immediately
after

engine

starting

check
air
control

valve
for

correct

position
as
described
above
In

this

case
correct

position
of
air
control

valve
is

the

reverse
of

step
3

under

hood
air
inlet
is
closed

and
hot
air

inlet
is

open

S

Check
that
air
control
valve

grad

ually
opens
to

cold
air

inlet
side

as

engine
warms

up
When

environmental

temperature
around

temperature
sen

sor
is
low

spend
more
time

for

engine

warming
up
operation
to
facilitate

smooth

operation
of
air
control

valve

If
the
above

test
reveals

any
prob

lem
in
the

opera
ion
of
air
control

valve

carry
out
the

following
test

VACUUM
MOTOR

I
With

engine
stopped
confirm

that

cold
air
inlet
is

open
and

hot
air

inlet
is

c1
Sed

If
not

check
air
control
valve
link

age
for

proper
operation

2

DiscoJln
ct
ac
um

motor
inlet

vacuum
hose

and
connect

another

hose
to
the

inlet
to

apply
vacuum
to

vacuum
motor

Vacuum
can

be

appli
d

by
breathing
in

tile
hos
e
end

as

shown
Then

confirm
that

the
air

control
valve

moves

3
With
hot
air
inlet
in

open
posi

tion
as

described
in

step
2

above

pinch
vacuum
hose
with

fingers
and

cut
off
air
from

vacuum
hose
In

this

condition

check
that
air
control

valve

maintains
the

condition
described
in

step
2

for
more
than

30
seconds

and

that
hot

air
inlet

is

open
If

diaphragm

spring
actuates

the
air
control
valve

by

its

spring
force
to
close

within
30

seconds

replace
vacuum
motor

as
an

assembly
since
this

may
be
resulted

from
air
leak

at
vacuum
motor
dia

phragm

TEMPERATURE
SENSOR

If
tests
indicate
that
A
T
C

system

is

malfunctioning
and
motor
is
func

tioning
properly
check
temperature

sensor
for

proper
operation

Confirm
that

engine
is

cold
before

starting
tests

Start

engine
and

keep
idling

Immediately
after

starting
engine

disconnect
vacuum
motor
inlet

vacu

um
hose

and
make

suce
that
intake

vacuum
is

present
at

end
of
vacuum

DESCRIPTION

The
idle

compensator
is

basically
a

thermostatic
valve
which

functions
to

introduce
the
air

directly
from
the
air

cleaner
to
the
intake
manifold
to

compensate
for
abnormal
enrichmerit

of
mixture

in

high
idle

temperature

The
bi
metal
attached
to
the
idle

compensator
detects

the

temperature

of

intake
air

and

opens
or

closes
the

valve
Two

idle

compensators
having

different

temperature
characteristics

are
installed

one

opens
at
an
intake
air

temperature
of
60
to
700C

140
to

IS80F
and
the
other

at
70

to
800C

158
to

1760
F

EF222
1

Orifice

2

Bi
metal

3
Rubber
valve

Fig
EF
ll

Idle

Compensator
Engine
Fuel

hose

If
vacuum
is
weak
or
is
not

present

at
all
check
vacuum
hoses
for

leakage

Replace
temperature
sensor
if
vacuum

hoses
are
in

good
order

EF978

Fig
EF

l0
Checking
for
Pressure

of

Intake
Vacuum

IDLE

COMPENSATOR

INSPECTION

I
Check
that
valve

is
in
closed

position
when

bi
metal

temperature
is

lower
than

operating

temperature
To

check
breathe
air
into

tube
or

suck

air
If
excessive
air

leakage
is
found
at

the
valve

replace
idle

compensator
as

an

assembly
Note
that
two
idle

com

pensators
are
mounted
to
air

cleaner

and
that
it
is
ne

essary
to

plug
the

valve

of
one
of
these
idle

compensa

tors
so
as
to

prevent
air
leak
while

checking
the

other
one

I

t
I

I
Orifice

2
Rubber
valve

EF225

Fig
EF

12
Checking
Idle

Compensator

Note
When

checking
idle

compensa

tor
on
car
disconnect
hose

leading

EF

5
2

Reconnect
vacuum
hose
to

vacu

um

motor
and
warm

up
engine

3

Check
that
air

control
valve

grad

ually
opens
to
cold
air
inlet

side
as

engine
warms

up
When

environmental

temperature
around

temperature
sen

sor
is
low

spend
more
time

for

engine

warming
up

operation
to

facilitate

smooth

operation
of

air
control
valve

If
air
control
valve

does
not

open

check
air
control

valve

linkage
for

binding
Replace
temperature
sensor
if

air

control
valve

linkage
is

functioning

properly

to
idle

compensator
and
connect

other
hose
then

carry
out
check
as

described
above

2
Warm

up
engine
completely

3

Open
engine
hood
and
remove
air

cleaner
cover

4

Direct
warm
air
to
idle

compensa

tor
with
a

heat

gun

And

measure

operating
temperature

of
idle

compensator

EF043A

Fig
EF
13

Checking
Idle
Compemator

for
Op
ration

Note
Locate
stick

temperature
gauge

as
close
to
sensor
as

possible
so
that

warm
air

from

dryer
is

directed
to

these

parts
evenly

Engine
Fuel

S
Idle

compensator
is
ill

good
order

if
a

hissing
sound
is

heard
when
its

temperature
reaches

operating
tern

perature

If
not

replace
idle

compensator
ldlerompensator
l
b
l

r
I

No
1
60
to
700C

140
to
15

Of

No
2
70

to
800C

158
to
1760F

FUEL
FILTER

DESCRIPTION

t
t

I

J
i

l
The
fuel
filter
is
a

cartridge
type
It

useS
a

paper
element

1
Body

2

Paper
element

3
Cover
EFOOS

Fig
EF

14
Sectional
View
of
Cartridge

Type
FuelFilte

FUEL
PUMP

t

j
f

EC132

Fig
EF
15
Schematic
View

of
Fuel

Pump

EF
6
OPERATING
TEST

Note
When

disconnecting
fuel
hoses

me
a

container
to
receive
fuel

remaining
in
fuel
hoses

STATIC
PRESSURE
TEST

The
static

pressure
test
should
be

conducted

as
follows

I
Disconnect
fuel
hose

between
car

buretor
and
fuel

pump

2
Connect
a
rubber
hose
to
each

open
end
of
aT
connector
and
con

nect
this
connector
hose

assembly
be

tween
carburetor
and
fuel

pump

Note
Locate
this
T
eonnector

as

close
to
carburetor
as

possible

3

Connect
a
suitable

pressure
gauge

to

the

opening
of

T
connector
and

fasten
the
hose
between
carburetor

and
T

connector

secUrely
with
a

clip

4
Start
and
run
the

engine
at

various

speeds