a
bobby
pin)
between
the
rubber
cup
at
the
end
of the
spark
plug
wire
and
the
tubular
metal con-
nector
inside
of
it. If
the
spark
plug
wire
is
wet
or
oily,
wipe
it
dry.
Wrap
a
dry
handkerchief
or
facial
tissue,
folded
several
thick·
nesses,
around
the
wire
at
least
three
inches
back
from
the
end
and
grasp
the
wire
at
this
point.
Hold the
bare
wire
about
1f4
inch
from the
bare
tip of the
spark
plug from which you removed the
Checking
Spark
wire.
When
the
engine
is
"turned
over"
a
spark
should jump
across
the
1f4
inch
space,
indicating
ample
current supply.
If
no
spark
jumps, the difficulty
is
probably
caused
by a defective ignition
part
and
should
be
corrected
by.
your
Authorized Chevrolet Dealer.
COOLING
SYSTEM
When
the
car
will run but evidences serious
overheating
on the
temperature
gauge
in
the instrument
panel,
there
are
several items
which may
be
checked.
(L)
Engine
overheating
will
occur
when the
OIL
LEVEL
falls
danger-
ously low. Check the oil level
as
a matter
of
course.
(M)
Low
COOLANT
LEVEL
will,
of
course,
cause
engine
over-
heating. Determine the
cause
of
the low
coolant
level
and
have
it
corrected
if
necessary.
(N)
Check the
RADIATOR
CORE. Clean
it
if
it
is
plugged
with
bugs, leaves
or
other
foreign material.
71
(0)
Condition
of
the
FAN
BELT
is
very important, not only
for
en-
gine
cooling
but
also
for
proper
generator
operation.
Check the
condition
of
the belt. Replace it
if
it
is
worn
or
frayed.
Loosen the
generator
toward
the
engine
to
remove
and
replace
the
belt.
Tighten the belt,
whether
new
or
old,
by
loosening the
generator
bolts, prying with a
bar
on the
generator
until the belt
is
ten-
sioned properly, then retighten
the
generator
bolts.
(P)
Another
cause
of
engine
overheating may
be
an
inopera-
tive COOLING
SYSTEM
THERMO-
STAT.
If
the thermostat should fail
in
the closed position,
it
will
not
permit coolant to circulate through
the system.
In
such
an
emergency
the thermostat may
be
removed
but should
be
replaced
with a
properly
functioning thermostat
as
soon
as
possible.
Fan Belt Tension
Thermostat
Installation
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