fuel cap DATSUN PICK-UP 1977 Owner's Manual

sufficient

delivery
of
fuel
to

engine

or

vapor
lock
It
must
therefore
be

1

3
connectur

COCk

Air
Manometer
Emission
Control

System

repaired
or

replaced

368
mmH20

14
5
inH20

LL

IPO
liqUid
epo
o

36

r
@

Carbon
canister

EC786

Fig
EC
79

Checking

evaporative
emmion

control

syatem

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
so

Checking
carbon
canuter

purge
control
valve
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

phragm
kit

which
is
made

up
of
a

retainer
a

diaphragm
and
a

spring

@

@

1
Cover

2

Diaphragm

3
Retainer

4

Spring

ET350

Fig
EC
81
Carbon

catU
ter

purge

control
valve

CARBON

CANISTER
FILTER

Check
for
a
contaminated

element

Element

can
be
removed

at
the

bottom
of

canister

installed
on
vehicle

body

EC
32
ET37Q

Fig
EC
s2

Replacing
carbon

canuter

filter

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

uni
t

l

u

ET369

Fig
EC

83
Fuel

filler
cap

Engine
Electrical

System

SERVICE
DATA
AND
SPECIFICATIONS

California

models
Non

California

models

For
Canada

except
for

Canada

BP6ES
ll
BP6ES

BPR6ES
Standard

L45PW
ll
L45PW

BP4E
ll
BP5ES
ll
BP4E

BP5ES
BPR4ES

Type
Hot

type

L46PW
ll

L47PW
ll

L46PW
L47PW
BPR5ES

Cold

type
BP7ES
ll

BP7ES

BPR7ES

LMPW
ll
LMPW

1
0
to
l
l
0
8
to
0

9
0
8
to
0
9

Plug

gap
mm

in

0

039
to
0
043
0

031
to
0
D35
0
031
to
0

035

Tightening
torque
kg
m
ft
Ib

I
1
5
to
2

0
11
to
14

TROUBLE

DIAGNOSES

AND

CORRECTIONS

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
wire

from
spark

plug
starting

engine
and

ob

serving
condition
of

spark
that

occurs

between

high
tension

wire
and

spark

plug
terminal

After

checking
this

repair
as

necessary
Note
On
California
models

disc
on

nect
anti

dieseling
solenoid

valve

connector
to

cut
off

supply
of
fuel

to

engine
and

then
observe

the

condition

of

spaIks
while
starter

motor
is

in

operation

Condition
Location

Probable

cause
Corrective
action

No

spark
at
all

Distributor

Faulty
insulation
of
condenser

Non
Cali

Replace

fomia

models

Breakage
of
lead
wire
on
low
tension
side

Repair

Poor
insulation
of

cap
and
rotor
head

Replace

Seized

points
Non
California

models

Repair

Open
pick
up
coil
California
models

Replace

Air

gap
wider
than

specification
Cali

Adjust

fornia

models

Ignition
coil

Wire

breakage
or
short
circuit

of
coil

Replace
with
new
one

High
tension
wire

Wire

coming
off

Repair

Faulty
insulation

Replace

Transistor

ignition
Faulty
transistor

ignition
unit

Replace

unit

California

models

EE
4B

DESCRIPTION

REMOVAL

DESCRIPTION

The
fuel
tank
is4Sliters
II

Ji
U
s

gal
9
Ji

Imper
gal
in

capacity
The

tank
unit
is

mounted
to

the

right
side

of
the
rear

floor

1
Fuel

tank

2
Drain

plug

3
Filler
tube

4

RescfYOir
tank

5
Filler
hose

6
Breather
hose

7
Ventilation
hose

8

Evaporation
hose

9
Fuel
outlet
hose
and
tube

10
Fuel

tank

gauge
unit

11

Protector

12
Bracket

13
Retainer

14
Return

tube
Engine
Control
Fuel
Exhaust

Systems

FUEL
SYSTEM

CONTENTS

FE
4

FE
5
INSPECTION

INSTALLATION
FE
6

FE
6

The
filler
shutter
is
installed
to

the

filler
tube
on
California
models

The
electric
fuel

pump
is

adopted

on
air

conditioner

equipped
models
For

the
electric
fuel

pump
refer
to

Section
EF

FE194

Fig
FE
3
Fuel
tank

FE
4

Engine
Control
Fuel
Exhaust

Systems

I

Wipe
clean
all
the

contact

por

tions
of
tube

joints
allow
them

to

dry

thoroughly

2

Temporarily
mount
in

place

muffler
assembly
as
an

assembled
unit

on
the
vehicle

3
Insert

front
tube
until
it
touches

emboss

m
b
nlfrnnjj

mm

lJ
Ij

@L
J

FE263

Fig
FE
ll
Exhawt
tube

connection

4

Torque
nut

securing
the
male
and

female

tubes
at
the
connection

Tightening
torque
is
1
6

to
2

0

kg
m

12
to
14

ft
lb

5

Squeeze

approximately
5

CC
0
31

cu
in

of
sealant
into

injection
from

sealant
tube
See

Figure
FE
12
Sealant
tube

polyethylene

Injector

Fig
FE
IO
Exhaust
sealant
kit

Be

sure
to

place
cap
back
to
sealant

tube
since
sealant
will

dry

Approximately

5
cc

0
31
Cll
in

FE1l1

Fig
FE
12

Squeezing
sealant
to

injec
tor

6

Position
nozzle
of

injector
to
the

guide
and

press
it

there

firmly
Inject

sealant

slowly
until
sealant
begins
to

flow
out

of
the
slit
of
tube
This

indicates

that
the
bead

requires
no

further
sealant
Excessive
sealant
can

cause
a

clogged
tube

See

Figure

FE

13

After

injecting
wash

injector

thoroughly
in
clean

water
to
remove

all
traces

of
sealant

FE191

Fig
FE
13
Injecting
sealant

FE
9
7
Start

engine
and
let
it
idle

slowly

for
ten
minutes

minimum
to

hilfden

sealant
with
the
heat
of
exhaust

gas

8
Check
the

condition
of

sealant

before

driving
the
vehicle
It

is
also

essential
that
the

vehicle
should
not

be

accelerated

sharply
for
20
to
30

minutes

subsequent
to
this

operation

Noles

a
The
sealant

should
be
used
within

guaranty
term
indicated
on
the

kit

case

b

Exposure
of
sealant
to
the
skin

may

cause
a

rash
Wash
sealant
off
the

skin
with
water

c
Do
not

keep
the

sealant
tube
in

a

place
where
the
ambient

tempera

ture
is

above
400C
I040F
A

sealant
hardened
above
4QoC

I040F
cannot
be
used
The
most

suitable

storage
temperature
is

from

15
to
350C
59
to
950F
If
sealant

becomes
hardened
because
of
low

temperatures
wann
the
sealant

tube
with
lukewarm
water
until
the

sealant
is

softened
Do
not
warm

tube

at
a

temperature
over
400C

1040F
for
a

long
time

d

Thoroughly
read
the
instruction

sheet
furnished
with
the
kit
before

using
the
sealant
i

Body
Electrical

System

RADIO

Noise

prevention

Position
vehicle
in
an

open
area

away
from
steel

buildings
run

engine
extend
antenna
to
its
maximum

length
set
volume

control

to
maximum
and
set
dial
at
a
medium

point
without

catching
broadcasting
wave

Condition

Ignition

system

Noise
occurs
when

engine
is

op

erated

Charging
system

Sound
of

alternating
current

pre

sents

When

accelerator

pedal
is

depressed

or

released
noise

presents

Supplement
equipment

When

engine
starts
noise

presents

Noise

still

presents
even
after

stop

ping
engine

Notes

a
Be
sure
to
locate

capacitor
as

close

as
to

noise
source
and
connect
in

parallel
Probable
cause
Corrective
action

High
tension
wire

Install
new

high
tension
wire

Ignition
coil
Install
a
0

51lF

capacitor
to

primary
side

terminal
of

ignition
coil

Note
Be

careful
not
to
install

capacitor
to

secondary
or

primary
breaker
side
other

wise

engine
becomes

improper

Install
bond

strap

Distributor
Secure
contact
of
carbon
electric

pole
and

rotor

Eliminate

sharp
tip
on

rotor

pole
or

cap
pole

by

scrubbing
with
a

screwdriver

Check

stagger
between
rotor

and
stator

Alternator
Install
a
0

51lF
capacitor
to

charging
termi

nalA

Note
Do

not

use
a
larger
capacitor

If

capacitor
is

installed
to
terminal
F

alternator
coil
will
be

damaged

Regulator
Install
a
0

51lF
capacitor
to
IGN
terminal

of

voltage
regulator

Operative
noise
of
water
tem

perature
and
fuel

gauges
Install
O

IIlF
capacitor
between
terminal
and

ground
wire

Note
If

a

capacitor
having
a

larger
capacity

is
used
indication
of

gauge
will
be
de

viated

b
Cut
lead
wire

as
short
as

possible

c

Ground
wire
should
be
attached
on

the

body

completely

d
Make
installation
and
connection
securely

e

Carefully
identify

or
OUT

mark
IN

BE
35