Chevrolet 1973 Monte Carlo Owner's Manual page 73

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
V4
inch
from the bore 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
1,4
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.
IL) Engine overheating will occur when the OIL LEVEL falls danger-
ously low. Check the oil level as a mailer of course.
1M) Low COOLANT LEVEL will, of course, cause engine over-
heating . Determine the cause of the low coolant level and have
it corrected if necessary.
70
IN) Check the RADIATOR CORE. Clean it if it is plugged with
bugs, leaves or other foreign material.
(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 couse of engine
overheating may be an inopera-
tive COOLING SYSTEM THER-
MOSTAT. If the thermostat should
foil in the dosed 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 ther-
mostat as soon as possible.
Fan Belt Tension
Thermostat 'ns'alla"on