Datsun 1200 - Page 45

Fuel
Sy rem
12
DESCRIPTION
1 AIR CI HANER
The air
cleaner
assemblies on
the
two models
covered
in
this
manual are fitted with
viscous
paper type
elements
The
elements
should not
be cleaned in service
but
should be renewed at the recommended
mileage
of 40
000
kilometres
24 000
miles
This mileage
is
only
a
guide
for nonnal
operating
conditions
and should be
reduced
accordingly
if
the vehicle
is
operating
under
extremely dusty
conditions
NOTE
Paper
air cleaner
elements
should not be washed in
petrol
or any
other
type of
so
vent Elements that have
been washed
in
so vent or
that have become
oil
soaked
should be discarded and
a new element
fitted
TO REMOVE
1
Detach
tire
rocker cover to
air cleaner
ventilation
hose
2 Remove the
two bolts
which secure the air
cleaner
assembly
to
the inlet
manifold
bracket
3
On
1200 models
disconnect
the additional bracket
which
is secured on the
inlet
manifold
to
cylinder
head
retaining
stud
4 Remove
the
air cleaner
assembly
from
the
carburettor
5 Unscrew the
wing
nut and
remove
the
top
cover
from
the air cleaner main
body
and
withdraw the
paper
element
t
TO
INSTAL
1
With a
piece
of clean fluffless
cloth
thoroughly
wipe
accumulated
dust
away
from both
portions
of the air
cleaner
assembly
2 Place the
paper
element
into he air cleaner
body
and centre it on its
seat
3 Position the air cleaner
top
cover onto
the main
body
and instal and
tighten
the
wing
nut
4
Instal the air
cleaner
assembly
to
the
carburetlor
5 Fit
and
tighten
the
two inlet manifold
to air
cleaner
assembly
bracket
bolts
6 On
1200 models
connect the
additional
bracket
which is
secured to the inlet
manifold
to
cylinder
head
retaining
stud
7
Reconnect
the rocker cover to
air cleaner
ventilation hose
1
Engine
will not start
4 FUEl
SYSTEM FAULT DIA NOSIS
Possible cause
a
Lack
of fuel in
bowl
b
Engine
flooded with fuel when cold
by
excessive use
of choke or
accelerator
c
Engine
flooded when hot
as
in
b
above
2
Engine
stalls at
idle
speed
Possible cause
a
Incorrect
adjustment
of
idling speed
and
or mixture
control screws
b Carburettor float
bowl
flooding
c Carburettor
starving
for fuel
d Blocked
idling
jet
or
idle
air bleed
e
Carburettor to manifold
attachment bolts
lopse
f Leaking
carburettor
flange
or intake
manifold
gaskets
g Faulty
gasket
or
loose
attachment screws
carburettor
main
body
to
air
horn
assembly
Remedy
Check
fuel
pump
delivery sticking
or
clogged
needle
valve
Hold accelerator flat
until
engine
starts
and revise
starting procedure
Hold accelerator
pedal
flat until
engine
starts
Remedv
Check and
adjust
control screws
Check
float
level and
for
sticking
needle valve
or
punctured
float
Clean and blowout
carburettor
Check fuel
delivery
at needle valve Clean
and
blowout carburetlor
Check
fuel
pump
Clean and blowout
carburettor
Check
and
tighten
bolts
Check and renew
faulty gaskets
Renew
faulty
gaskets
and
tighten securing
screws
45
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