1979 DATSUN 210 air condition

3
way
connector

ck

Air

@
Manometer

Carbon
canister
Emission
Control

System

400
mmH20
15
75

inH20

Check
valve

Fuel

filler
cap

r

EC091A

Fig
EC
I09

Checking
Evaporative
Emiuion
Control

Syatem

FUEL
CHECK
VALVE

I
Blow
air

through
connector
on

fuel
tank
side

A

considerable
resistance

should
be

felt
at
the
mouth
and
a

portion
of
air

flow
be
directed
toward
the

engine

2
Blow
air

through
connector
on

engine
side

Air
flow
should
be

smoothly
direct

ed
toward
fuel
tank

3
If
fuel
check
valve

is

suspected
of

not

being

properly
functioning
in

steps

I

and
2
above

replace

Engine
side
Fuel
tank

side

Q

Evaporative
fuel
flow

Fresh
air

flow

EC090A

Fig
EC
110

Checking
Fuel
Check

Valve
CARBON
CANISTER
PURGE

CONTROL
VALVE

Check
for
fuel

vapor
leakage
in
the

distributor

vacuum
line

at

diaphragm

of
carbon
canister

purge
control
valve

To
check
for

leakage

proceed
as

follows

I
Disconnect
rubber
hose
in
the

line
between
T

connector
and
carbon

canister
at
T
connector

2

Inhale
air
into

the

opening
of

rubber
hose

running
to
vacuum
hole
in

carbon
canister

and
ensure
that
there

is

no
leak

ET349

Fig
EC
lll

Checking
Carbon
Canister

Purge
Control
Valve

EC37
3
If
there
is
a
leak
remove

top

cover
from

purge
control
valve
and

check
for
dislocated
or
cracked
dia

phragm
If

necessary
replace
dia

phragrrt
kit
which
is
made

up
of
a

retainer

diaphragm
and

spring

i

ii

1
Cover

2

Diaphragm

3
Retainer

4

Diaphragm
spring

ET350

Fig
EC
112

Carbon
Canister

Purge

Control
Valve

FUEL
TANK
VACUUM

RELIEF
VALVE

Remove
fuel
filler

cap
and
see
it

functions

properly

I

Wipe
clean
valve

housing
and
have

it
in

your
mouth

2
Inhale
air
A

slight
resistance

ac

companied
by
valve
indicates
that

valve
is
in

good
mechanical
condition

Note
also
that

by
further
inhaling
air

the
resistance
should
be

disappeared

with
valve
clicks

3
If
valve
is

clogged
or
if

no
resist

ance
is

felt

replace
cap
as
an
assem

bled
unit

O

ET500

Fig
EC

1l3
Fuel
Filler

Cap

DESCRIPTION

The

ignition
circuit
consists

of

igni

tion

switch
Ie

ignition
unit
dis

tributor

winng

ipark
plugs
and

battery

The

distributor
is

of
the

contactless

type
and
is

equipped
with
a

pick
up

coil
which

electrically
detects
the

igni

tion

timing
signal
in

place
of
the

ircuit

I
rea
r

of
the
conventional

distributor
The
IC

ignition
unit
is

a

new
addition

which

generates
the

signal
required
for
the

make
and
break

of
the

primary
current
for
the

ignition

coil

The

primary
current
is

supplied

by
the

battery
or
alternator
and

flows

through
the

primary
circuit

It
consists

of
the

ignition
switch

primary

winding
of
the

ignition
coil

IC

ignition
unit

and
all

connecting
low

tension

wiring

The

secondary
current
is

produced

by
the

ignition
coil
and
flows

through

the

secondary
circuit

resulting
in

high

voltage
spark
between

the
electrodes

of

the

spark

plugs
in

engine
cylinders

This
circuit

contains
the

secondary

winding
of
the

ignition
coil
distribu

tor

high
tension

cables
to

coil
and

spark

plugs
distributor

rotor
and

cap

When
the

ignition
switch
is

turned

on
and
the

distributor

reluctor
rotates

the

primary
current
flows

through
the

primary

winding
of
the

coil
and

through
IC

ignitionu
nit

to

ground

When
the

primary
circuit
is

opened

by
circuit

of
IC

ignition
unit

the

magnetic
field
built

up
in

the

primary

winding
of
the
coil

moves

through

the

secondary
winding
of
the

coil
in

ducing
high

voltage
This

high

voltage

is

produced

every
time

the

primary

circuit

opens
EngineElect
ical

System

IGNITfON

CIRCUIT

The

secondary
current

flows

through
the

high
tension

cable
to
the

distributor

cap
then

the
rotor

distributes
the
current
to

one
of
the

spark
plug
terminals
in
the

distrubutor

cap

Then
the

spark
occurs

while
the

secondary
current

jumps
the

gap
be

tween
the
insulated
electrode
and
the

ground
side
electrode
of
the

spark

plug
This

process
is

repeated
for
each

power
stroke

of
t

e

engine

The

spark
plug
should
be

inspected

cleaned
and

regapped
at

tune

up

Spark

plugs
should
also
be

replaced

periodically
as

specified
in

the

Maintenance
Schedule

The
remainder

of
the

ignition

component
parti
should
be

inspected

Battery

letink

Primary

winding

1

Ignition
coil

Secondary
winding
J
for

only
their

operation
air

gap
of

distributor

tightness
of

electrical

terminals
and

wiring
condition

Apply
grease
NLGI

consistency

No
I

containing
MaS
or

equivalent

to
distributor
rotor

shaft
as

required

WARNING

When
current
is

flowing
never

touch
with
bare

hand

high
tension

cables
or

any
other

parts
with

high

vollage
If

parts
are
moist

touching

them
could
cause
an
electric
shock

even
if

they
are
insulated

Always

wear

dry
well
insulated

gloves
or

wrap
affected

parts
with

dry
cloth

before

handling

To
starter

EE
20
Ro

or
head

Ul

J

r

Spark
plugs

EE743

Fig
EE
56

Ignition
System
Circuit

Diagram

CHECKING
AND

ADJUSTMENT

CAP
AND
ROTOR
HEAD

Cap
and
rotor
head
should
be

in

spected
periodically
as

specified
in
the

Main
teoanee
Schedule
Remove

cap

and
clean
all

dust
and
carbon

deposits

from

cap
and

rotor
from
time

to
time

If

cap
is
cracked
or
is

leaking
replace

wi
th

a
new
one

ADVANCE
MECHANISMS

SpecHlcatlons

Refer
to
Service

Data
and

Specifica

tions

for
distributor

Vacuum
advance
mechanism

mechanical

parts

If

vacuum
advance
mechanism
fails

to

operate
properly
check
for
the

followin
B
items

and
correct
the

mal

function
as

required

I

Check
vacuum
inlet
for

signs
of

leakage
at

its
connection

If

necessary

retighten
or

replace
with
a

new
one

2
Check
vacuum

diaphragm
for
air

leak

If
leak
is

found

replace
vacuum

controUer

assembly

3

Inspect
breaker

plate
for
smooth

moving

If

plate
does
not
move

smoothly

this

condition
could
be

due
to

sticky

steel
balls
or

pivot
Apply
grease
to

steel
halls
or

if

necessary
replace

breaker

plate
as
an

assembly

Centrifugal
advance

mechanical

parts

When
cause
of

engine
malfunction

is

traced
to

centrifugal
advance
mecha

nical

parts
use
distributor
tester
to

check
its

characteristics

If

nothing
is

wrong
with
its

charac

teristics

conceivable

causes
are

faulty

or
abnormal

wear
of

driving
part
or

others
So

do
not
disassemble
it

In
the
event
of

improper
character

istics

check

closely
rotor

shaft
assem

bly

governor
weight
and
shaft

If

any
of
the
above

parts
are
mal

functioning
replace
the

parts
Engine
Electrical

System

DISASSEMBLY

AND
ASSEMBLY

DISASSEMBLY

I
Take
off

cap
and

remove
rotor

head

2
Remove

Ie

ignition
unit
Refer
to

IC

Ignition
Unit
for
removal
and
in

stallation

3
Remove
stator
and

magnet
by

removing
stator

securing
screws

4

Remove
vacuum
controller
by

removing
securing
screws

EE746

Fig
EE
59
Removing
Vacuum

Controller

5

Using
two

pry
bars

or
suitable

puller
pry
reluctor
from
shaft

CAUTION

When

removing
reluctor
be
careful

not
10
distort
or

damage
the
teeth

6
Remove
roll

pin

7
Remove

pick
up
coil

assembly

8
Remove
breaker

plate
setscrews

and
remove
breaker

plate
assembly

EE703

Fig
EE
60

Removing
Breaker
Plate

Setscrews

9
Punch
knock

pin
out
and
remove

pinion

EE
23
EE704

Fig
EE
61

Removing
Knock
Pin

10
Remove
rotor
shaft
and
drive

shaft

assembly

EE705

Fig
EE
62
Removing
Rotor
Shaft
and

Drive

Shaft
Assembly

11

Mark
rotor
shaft
and
drive

shaft

Remove

packing
from
the

top
of
rotor

shaft
and
unscrew
rotor
shaft
setscrew

Remove

rotor
shaft

EE706

Fig
EE
63
Removing
Rotor

Shaft

12

Mark
one
of
the

governor

springs
and
its

bracket
Also
mark
one

of
the

governor
weights
and
its

pivot

pins

13

Carerully
unhook
and

remove

governor

springs

14
Remove

governor
weights

A
r

ply
grease
to

guvernor
weights
after

disassembling

INSPECTION

I

Disconnect

high
tension

cables

from

spark
plugs
by
pulling
on

boot

not
on
cable
itself

2

Remove

spark

plugs

3

Check
electrodes
and
inner

and

outer

porcelains
of

plugs
noting
the

type
of

deposits
and
the

degree
of

electrode
erosion

Refer
to

Fig
EE

76

Normal
Brown

to

grayish
Ian
de

posits
and

slighl
electrode
wear

indicate
correct

spark

plug
heat

range

Carbon
fouled

Dry
fluffy
carbon
de

posits
on
the
insulator
and
elec

trode
are

mostly
caused

by
slow

speed
driving
in

city
weak

ignition

too
rich
fuel
mixture

dirty
air

cleaner
etc

H
is
advisable
to

replace
with

plugs

having
hotter
heat

range

Oil
fouled

Wet
black

deposits
show

excessive

oil
entrance
into

comb
us

tion
chamber

through
worn

rings

and

pistons
or
excessive

clearance

between
valve

guides
and
stems
If

the
same
condition
remains
after

repair
use
a
hotter

plug

Overheating
White
or

light
gray
insu

lator
with
black
or

gray
brown

spots
and
bluish
burnt
electrodes

indicate

engine
overheating
More

over
the

appearance
results
from

incorrect

ignition
timing
loose

spark
plugs
low
fuel

pump
pres

sure

wrong
selection
of
fuel

a

hotter

range
plug
etc

H
is
advisable
to

replace
with

plugs

having
colder
heat

range

4
After

cleaning
dress
electrodes

with
a
smaU
fme
file
to
flatten
the

surfaces
of
both

center
and
side
elec

trodes
in

parallel
Set

spark
plug

gap
to

specification

5

Install

spark

plugs
and

torque

each

plug

6
Connect

spark
plug
wires

CLEANING

AND

REGAP

Clean

spark
plugs
in
a
sand
blast
Engine
Electrical

System

SPARK

PLUG

Conventional

type

Normal

Overheating

Multi

gap
type

Nonnal

Overheating

type
cleaner
Avoid
excessive

blasting

Clean
and
remove
carbon
or
oxide

deposits
but
do
not
wear

away
porce

lain
If

deposits
are
too
stubborn

discard

plugs

After

cleaning
spark

plugs
renew

firing
surface
of
electrodes
with
file

mentioned

above
Then
check

spark

plug
gap
with
wire

feeler

gauge
All

spark
plugs
new
or
used

should
have

the

gap
checked
and
reset

by
bending

ground
electrode

EEOSO

Fig
EE
77
Setting
Spark
Plug
Gap

Except
FU
model

EE
29
Carbon

fouled

EE079

Worn

Carbon

fouled

Worn

EE601

Fig
EE

76

Spark

Plug

EE586

Fig
EE
78

Setting
Spark
Plug

Gap
FU
models

Engine
Electrical

System

II
STARTING
MOTOR

Condition

Starting
motor
will

not

operate

Noisy

starting
motor

Starting
motor

cranks

lowly

Starting
motor

cranks

slowly

Starting
motor

operate
but
does

not
crank

engine

Starting
motor
will

not

disengage
even
if

ignition
switch
is

turned
off
Probable
cause

Discharged
battery

Damaged
solenoid
witch

Loose
connections

of
terminal

Damaged
field
coil

Damaged
brushes

Damaged
bearing

Damaged
annature

Loose

securing
bolt

Worn

pinion

gear

Poor
lubrication

Worn
commutator

Worn

brushes

Discharged
battery

Loose
connection
of
terminal

Worn

brushes

Locked
brushes

Loose
connections
of
terminal

Damaged
field
coil

Damaged
brushes

Damaged
bearing

Damaged
armature

Dirty
or
worn
commutator

Armature
rubs
field
coil

Damaged

splenoid
switch

Worn

pinion

Locked

pinion

guide

Worn

ring
gear

Damaged
sOlenoid

switch

Damaged

gear
teeth

EE
35
Corrective
action

Charge
or

repiace
battery

Repair
or

replace
solenoid
switch

Clean
and

tighten
terminal

Replace
yoke

Replace
brushes

Replace
bearing

Replace
armature

Tighten

Replace

Add
oil

Replace

Replace

Charge

Clean
and

tighten

Replace

Inspect
brush

pring
tension
or

repair
brush

holder

Clean
and

tighten
terminal

Replace
yoke

Replace
brushe

Replace
bearing

Replace
armature

Clean
and

repair

Repalce
assembly

Repair
or

replace

Replace

Repair

Replace

Repair
or

replace

Replace
damaged

gear

Engine
Electrical

System

III

ALTERNATOR

Including
voltage
regulator

Condition

No

output

Excessive

output

Low

output

Noisy
alternator
Probable
cause

Sticking
brushes

Dirty
brushes
and

slip
rings

Loose
connections

or
broken
leads

Open
stator

winding

Open
rotor

winding

Open
diodes

Shorted
diodes

Shorted
rotor

Shorted
stator

Ground
BAT

terminal

Broken
fan
belt

Voltage
regulator
breakdown

Poor
connection
of
alternator

S
terminal

Open
diode

Loose
or
worn
fan
belt

Slicking
brushes

Low

brush

spring
tension

Voltage
regulator
breakdown

Dirty

slip
ring

Partial
hort

ground
or

open
in

stator

winding

Partially
shorted
or

grounded
rotor

winding

Open
or

damaged
diode

Loose

mounting

Loose
drive

pulley

Broken
ball

bearing

Improperly
seated
brushes

EE

36
Corrective
action

Correct
or

replace
bru
hes
and
brush

springs

Clean

Retigliten
or

older
connection

Replace
leads
if

necessary

Repair
or

replace
stator

Replace
rotor

Replace

Replace

Replace
rotor

Replace

Replace
insulator

Replace

Check

regulator

operation
and

repair
or

replace
a

required

Correct

Replace

Retighten
or

replace

Correct
or

replace
brushes
and

springs
if

necessary

Replace
brush

spring

Check

regulator
operation
and

repair
or

replace
as

required

Clean

Replace
tator

Replace
rotor

Replace
diode

Retighten
bolts

Retighten

Replace

Seat

correctly

Engine
Electrical

System

IV
IGNITION
CIRCUIT

When

engine
does
not

start

If

there
is
no

problem
in
fuel

system

ignition
system
should
be

checked
This
can
be

easily
done

by

detaching
a

high
tension
cable
from

distributor

starting
engine
and
ob

serving
oondition
of

spark
that

occurs
between

high
tension
cable
and

engine

block
After

checking
this

repair
as

necessary
tery
and
anti
dieseliilg
wlenoid

valve
connector
to
cuI
off

supply

of
fuel
10

engine
Then
observe
the

condition
of

sparks
while
starter

motor
is
in

operation

Note
Turn

ignilion
switch
off
and

disconnect
ground
cable
from
bat

Condition
Location

Probable
cause
Corrective
action

No

spark
at
all
Distributor

Breakage
of
lead
wire
on
low
tension

side

Repair

Poor
insulation
of

cap
and
rotor
head

Replace

Open
pick
up
coil

Replace

Air

gap
wider
than

specification
Adjust

Ignition
coil
Wire

breakage
or
short
circuit

of
coil

Replace
with
new
one

High
tension
cable
Wire

coming
off

Repair

Faulty
insulation

Replace

IC

ignition
unit

Faulty
IC

ignition
unit

Replace

Breakage
of
circuit

Replace

Detached
connection

Repair

Spark
length
Spark
plugs
Spark
plug

gap
too

wide
Correct
or

replace

More
than
6

mm

Too

much
carbon
Clean
or

replace

0
24
in

Broken
neck

of
insulator
Replace

Expiration
of

plug
life

Replace

Distributor
Air

gap
too
wide

Correct

IC

ignition
unit

Faulty
IC

ignition
unit

Replace

Breakage
of
circuit

Replace

Detached
connection

Repair

EE
37

2

Engine
rotates
but
does
not

run

smoothly

This

may
be
caused

by
the

ignition

Condition

Location

Engine
misses

Distributor

Ignition
coil

High
tension

cable

Spark
plugs

IC

ignition
unit

Engine
causes

knocking

very

often
Distributor

Spark

plugs

Engine
does

not

deliver

enough

power
Distributor

Spark
plugs
Engine
Electrical

System

system
or
other

engine
conditions
not

related

to

ignition
system
Therefore
first

complete

inspection
of

ignition

system
should
be
carried
out

Probable
cause

Foreign
matter

onpicl
up
coil

Improper
air

gap

Leak
of

electricity
at

cap
and
rotor
head

Breakage
of

pick
up
coil
lead
wire

Worn
or

shaky
breaker

plate

Worn

or

shaky
distributor

driVing
shaft

Layer
short
circuit

or
inferior

quality

coil

Deterioration
of
insulation
with

cense

quenlleak
of

electricity

Fouled

Leak
of

electricity
at

upper
porcelain

insulator

Spark
plug
gap
too
narrow

Faulty
IC

ignition
unit

Breakage
of

circuit

Detached
connection

Improper

ignition
timing
too
advanced

Coming
off
or

breakage
of

governor

spring

Worn

pin
or
hole
of

governor

Burnt
too
much

Improper
ignition
timing
too

retarded

Improper
functioning
governor

Foreign
particles
stuck
in
air

gap

Fouled

EE
38
Corrective
action

Clean

Correct

Repair
or

replace

Replace

Replace
assembly

Replace
aSsembly

Replace
with

good
one

Replace

Clean

Repair
or

replace

Correct
or

replace

Replace

Replace

Repair

Correct

Correct
or

replace

Replace

Replace

Correct

Replace
assembly

Clean

Clean