, 1923-09-02

0Verneatlng Is a common com
plant. but fortunately is a trouble
that can generally be remedied very
easily. There are a number of de.
fects that can cause everlasting,
but a systematic inspection and ex.
animation will soon reveal which
particular one is causing the trouble.
The illustration above will show
you tine most important points to
watch. II n radiator has not been
flushed and cleaned out for some
time. h sediment and scale that
forms inside the tubes and water
Jackets may be obstructing the free
circulation of the water. TIC remove
this deposit. first drain off the water
ir the radiator to see how many gal
1ot y 1t holds, then add one pound of
COZ mon washing soda for every
gal on of water. Pour this mixture
into the radiator, then let the engine
u for a few hours. Draw off the
dirty water and remove the bottom
water connection. then take a hose
with a good pressure behind It and
let tho water run through until It
comes out clear and clean. If there
is any mud between the fms or cells
of the radiator. remove 1t by squirt
ing water through from the rear.
Be careful in doing this hat you do
not wet any of tho ignition units.
Cover them up.
If the hose connections are very
old. the rubber covering inside the
hose may have peeled and curled
Up, SO ~obstructing the flow of the
water. Fit new hose II the present
hose appears to be persisted or old
Examine the level Of the oil in the
crank case. II it is very low. the
engine viii not only overhead. but
will knock badly as well. How long
is It since you changed the oil in
the crank casc and supplied IT with
fresh oil? II YOU have not had the
crank cases drained during the last
1000 or 1900 miles. II is quite pos
sible that here is the cause of your
trouble. After 500 miles running.
the oil is diluted very hesvily with
the gasoline that finds its way into
TIN crank case and destroys the
luhricatins properties of the oil.
When this dilution gets very bad,
the engine starts to heat IN be
cause the oil has not sufficient body
to lubrlcate the engine properly.
Examine to see hat the '@n BET
Is not broken or too loose. The belt
should he adjusted 10 that YOU can
lust pull 81 over the pulley wi;h two
fingers. Be careful YOU do not I'd
Just 90 tightlv. as this throws n
strain on the bearing. causes it TO
wear very rapidly. and At the same
time will cause the belt to stretch
and break. If this Is your first car
you may not know that II you run
for n great distance with the
spark lever retarded. the engine wilt
overhead. Always drive with tho
spark lever advanced as far as pos
sible. You can generally keep it
fully advanced at speeds Of 90 miles
an hour and over. and only require
to retard 1t slightly when you slow
down or when climbing a hill and
the engine is pulling hard.
II you have been running with
the spark lever in the correct posi-
ton. lift up the hood. then have
some one move the spark lever up
and down while you observe the dis
tributor head. to see that 1t moves
when the spark lever is moved
sometimes the connections become
or disconnected. then the dis
tributor does not move at all when
you move the spark lever. with the
result that you are running all the
time with a retarded spark. This
will not only cause the engine to
overhead. but win also considerably
the power and pep of the
engine.
If you find that the engine knocks
badly when you advance the spark
and stops when you retard it.
IL is a fairly certain indication. espe-
ciaIly II tho engine shows signs of
overheatlng. hat there is a consider.
able amount OF carbon deposit In the
cylinders which must be removed.
Carbon deposit is probably the
of ~overheating.
This trouble IN caused by leaky
rings. too much oil In h
crank case. poor grade OF oil or an
unsuitable oil. diluted oil, or car
buretor mixture too rich. The car
bon deposit car be removed by talk
ing off the cylinder head and scrap
ing It out. or It can be burned out
with the oxygen process. II you
have II removed by tho oxygen
process. have II lone by an expert
enced man. as II this operation is
unskillfully performed. you are
liable to have the pistons burned or