Evening times-Republican. [volume] (Marshalltown, Iowa) 1890-1923, 1920-12-08
The Auto Quiz

| What results viii too much
/ printing. as may often hurpen In cold
weather, have upon the engine?
/ Too much printing is worse than
! none to the engine which requires
| printing in cold weather. 1t will give
Ia mixture so rich that il will not
/ ignite, the engine will not start and
| the excess Sasolene drawn or poured
| into the cylinders Will run past the
| piston riugs dilute the oil in the
crank case md do considerably more
harm than good. Frequent changing
OF oil ana in extreme cases the sciz-
! ing OF pistonS in their cylinders is the
result. The frequent changing OF cyl
inIcr oil is advised TO prevent INSULT
Client lubrlcation of bearing surfaces.
Before starting an engine which has
received too much printing fluid close
the carburetor choke II open, switch
off the ignition and open cylinder pet
cocks. Then crank the engine to
draw fresh air into the cylinders,
after which the petcocks may be
closed and ignition switched on for
starting.
! 2.-What cooling system trouble,
common in winter. will cause over
heating of an engine?
Probably the cooling system most
commonly causing overheating OF an
engine in winter is that of the water
partly freezing in the radiator. AS a
rule the water freezes only at Blre
| radiator bottom or below it's center,
and as the habit is to examine the
1 water thru the filler cap at the top
| of the radiator the frozen water is
not detected until the engine has been
run for a time. The frozen part OF
the system prevents circulation of
/ water and us the engine continues to
run it becomes abnormally hot, causes
| steaming at radiator overflow pipe
an oNerheating5sof cylinders and
| seizing of pistons.
3.-Can wood alcohol or keroseEc
be used as an anti-freeze solution IN
| the radiator? IN
Wood alcohol and kerosene will
prevent water in the cooling system
from freezing. but they are not con-
sidered efficient anti-freeZe solutions.
| Wood alcohol Ens lower boiling
| point than denatured alcohol and ia
| more expensive, while kerosene gives
| off a dsagreeable odor when heated,
also a vapor which is infialnable and
would soon deteriorate rubber hose
connections from engine to radiator.
4.-When the steady application OF
I brakes Is necessary on long hill,
| how should the brakes be applied?
On a long hill when the steady ap-
| plication of brakes is necessary do
not apply this steady pressure With
/ only one set of brakes during the en-
/ tire length OF the hill. Alternate the
pressure, first using the foot or serv-
ice brakes, then the emergency brakes
operated with the hand lever. In
| this way overheating of brakes and
drums and wear to the fabric will be
| lessened.
5.--How can a rear end skid, which
usually occurs to the right, on an
oval or rounded road be corrected?
II the rerr end OF a car skids ~
| the right. as is usual or roundca
or oval road s the car is driven at
| the right of the road. the quickest
results in Strengthening the car out
| of the skid will be obtained il the
| front wheels are TUNED quickly
! toward the centerio the road and the
| power applied gently. Sometimes
! this kind OF skid can be>corrected by
simply closing the throttle to slow
down car and engine speed. In either
case do not apply the brakes as this
will only increase the skid.
Glow can tire casing with a
/ blowout and the fabric otherwise
bruised or broken in several places
| be repaired?
If the condition of fabric and tread
of blowout tire casing or one
| which has inside breaks or bruises.
| warrants the cost ot repair, reliner
covering the entire inner, surface OF
the shoe can be inserted. II there is
only one spot too weak to stand the
air pressure, a blowout patch should
be applied before the relincr is in
serted. Considerably more mileage is
sometimes derived from n tire thus
reinforced and inner tubes are pre-
vented from chatting at broken places
In the casing.
Why is copper wire used as a
conductor in the electric system and
why are certain sizes of wire re-
quired?
Copper is generally used for con
Quoting electricity because it is the
cheapest low resistance metal known.
There are metals which lave a still
lower resistance TO the flow OF cleo
tricity but their cost makes it pro
hibitive for extensive use. There are
certain sizes Of wire made to best
conduct the current as required for
certain functions OF the electric sys-
tenn. A wire that is too heavy will
tend to cause slugsishness in the
flow, While too light WIRE would
soon heat, running the insulation and.
soften and melt the wire at some.
point. This is called burning out the.
wire s, 81 81 1, 4 IS
s.-What is pre- ignition?
Pre-ign.tion is the igniting befo.c
tie proper time OF vapor admitted to