Datsun C210 series User Manual

It is normal condition if
diaphragm
does
not
move at all If not
replace
thermal vacuum valve
ET344
Fig
ET 21
Checking
E G R control
valve
3 After
engine
has warmed
up
thoroughly
increase
engine speed
again
from
idling
to
3 000
to
3
500
rpm
noting
if
plate
of
E G R
control
valve
diaphragm
moves
upwards
as
speed
is
increased
I
t is normal if
diaphragm
moves
upwards
If
not
ch ck thermal vacu
um
valve as described in
step
4
4
Make
sure
that thermal vacuum
valve
is
open
and
that c
rburetor
vacuum
is
present
at the end E G
R
control valve
side of vacuum hose If
vacuum
is weak or not
present
at all
replace
thermal vacu
u TI
valve
EC652
Fig
ET 22 Checking
thermal vacuum
valve
5
With
engine
running
at
idling
speed push up
E G R control valve
diaphragm
by manually pressing
bot
tom dish
It is normal if
engine
loses
stability
6
Remove E G R control valve
from intake manifold
Visually inspect
E G R control
valve for
sign
of
damage
wrinkle
or
otherwise
deformation
Engine
Tune
up
Clean
E
G R control valve seat
with brush and
compressed
air
to
eliminate
clogging
for E G R
conrrol
valve
Fig
ET 23
Cleaning
E G R control
valve seat
CHECKING VAPOR
LINES Hose
connections etc
AND FUEL
VAPOR
CONTROL VALVE
Fuel unk
and vapor vent line
I
Check
all hoses and fuel tank
filler
cap
2 Disconnect
vapor
vent line
con
necting
flow
guide
valve
to
fuel tank
3 Connect a 3
way
connector
a
manameterand a cock
or an
equiv
alent
3
way change
cock to
the
end
of
the
vent
line
4
Supply
fresh
air into
the
vapor
vent line
through
the cock little
by
little
until
the
pressure
becomes 3 923
kPa 400
mmH20
15
75
inH20
5
Shut the cock
completely
and
leave it that
way
6
After 2
5 minutes
measure
the
height
of the
liquid
in
the
manometer
7
Variation
in
height
should remain
within 0 245
kPa
25
mmH20
0
98
i
J j20
8
When the
filler
cap
does not
close
completely
the
height
should
drop
to
zero in a short time
9
If
the
height
does not
drop
to
zero
in
a
short time when the fiiler
cap
is
removed an obstructed hose is indi
cated
Note
In
case
the
vent line is blocked
the
breathing
in
fuel tank is not
thoroughly
made thus
causing
in
sufficient
delivery
of fuel to
engine
or
vapor
lock It must therefore be
repaired
or
replaced
3
W
j1J t
923
kPa
400
mmH20
15 75
inH20
ay
connectur
Cock
Ai
Manometer
IT
Fucl IiIIcr
cap
F10wguidcvatvc
I
J
Cheek valve
EC052A
Fig
ET 24
Checking evaporative
emi aion
controlsy tem
Flow
guide
valve
I Disconnect all hoses
connected
to
the flow
guide
valve
2 While
lower
pressure
air is
pressed
into
the
flow
guide
valve from the
ends
of vent line uf fuel tank side the
air should
go
through
the
valve
and
flow to crankcase side If the
air
does
ET
9
not
flow
rhe valve should be
replaced
But when
the
air is blown from crank
case
side
it
should never
flow to
the
other two
vent lines
3
While the
air is
pressed
into
rhe
flow
guide
valve from the carburetor
air cleaner side
it
flows
to
the
fuel
tank
side
and
or
crankcase side

Datsun C210 series Specifications

General

Brand	Datsun
Model	C210 series
Category	Automobile
Language	English