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rubber
cup
at the end of
the
spark plug
wire and the
tubular metal
connector
in-
side of it.
If
the
spark plug
wire
is
we
t
or oily, wipe it
dry
.
Wrap a dry handker·
chief
or facial
tissue,
folded
several thicknesses, around
the wire
at least
three inches
back
from
the end and
grasp
the
wire at
this
point.
Hold
the bare
wire
about
Yi
inch
from the
bare
tip
of
th
e
Checking
Spork
spark
plug
fro
m
whidl
you removed the wire or
from
any
part
of the
engine.
When the
engin
e
is "turned over"
a
spa
rk
should
jump across
the
y.;,
inch
space,
indicating
ample
current
supply.
If
no
spa
rk
jumps,
the
d ifficulty
is
probably caused
by a
defective ignition
part
and should be
corrected by you
r
Authorized
Chevrolet
Dealer.
COOUNG SYSTEM
'When
the
car
will
run but
evidences serious
overheating
on
the temperature
gauge
in
the
instrumen
t panel, there
are
several
items
which
may be
checked.
(L) Engine overheating wjll
occur
when
the
OIL
LEVEL
falls
dangerously
low. Check the
oil level as
a matter
of
course.
(M)
Low
WATER
LEVEL will,
of course,
cause
engi
ne
overheating. Determine the cause
of
the low wa
ter
level
and
have
it
corrected
if
necessary.
(N)
Check the RADIATOR
CORE.
Clean
it if it
is
plugged
with bugs, leaves or other
forei gn material.
(0) Condition
of
the
FAN BELT
is very
important,
not
only
for engin
e
cooling
but also for
proper
generator
opera
tion. Check
the
condition
of the belt. Replace
it
if
it is worn
or frayed. Loosen
the genera
tor
bol
ts and
move the
generator toward
the engine to
remove and
replace
the
belt.
Tighten the
bel t, whether
new
or
old,
by
loosening the
generator
bolts,
prying with
a
bar
on the generator until
the
belt
is
tensioned
properly,
then
retighten
the generator bolts. Proper belt tension
is
such that, when
pressed
hard
at
a
point midway
between
the
gen erator
and
fa
n
pulleys,
the
belt will
deflec
t
about
~4
inch.
(P) Another cause
of
en-
gine
overheating may
be an
inoperative
COOLING
SYS-
TEM
THERMOSTAT.
II
the thermostat
should
fail
in
the closed
position,
it will
not
permit
water
to circulate
through the system. In
such
an
emergency the
thermostat
may be removed but
should
be replaced
with
a
properly
functioning
thermosta
t
as
soon as
possible.
Thermostot
Instal/ot;on
43
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