Evening star. [volume] (Washington, D.C.) 1854-1972, 1920-07-18

/ ago.
No. THE state Of New York had
56o511 cars. the greatest number. at
the beginning of 1920. while Nevada
had the smallest number. or 9.305
cars. California had the largest num-
Der per capita, with a car to every
GOT people.
No. "A cause Of a carburetor
| catching fire on starting the motor
when 1t is cold is backfiring or spit
ting through the carburetor due to
leaking inlet valves or an excessively
lean fuel mixture A flooded carbu-
backnring. when this happens quick
action in shutting of the gasoline
| feed line from the tank and continu-
Gus turning over Of the motor to
| draw the flames inward until the fuel
in the carburetor is consumed may be
from damage.
No. 3-The fret practical eight cyl
inder automobile engine was built In
France. The first successful twelve
was built in England.
No. If your tire goes down very
and the valve stem. The small rub
Der washer within the valve may not
seat properly causing slow leak.
Also the leak may occur at the point
where the valve stem hts into the
tube. A nut and washer are used to
| hold this stem firmly to the tube. and
If the nut 1oosens there is bound to
be an air leak. If the valve Is all
right the leak must occur from open
pores, a pinch or wrinkle or small
puncture from exterior source in the
tube.
No. 5-A motor which requires con-
siderable cranking to start it after 1t
has run sufficiently to warm it up and
| therefore should insure easy starting
may have an excessively rich fuel
mixture. providing the ignition is cor
rect. This fuel condition could be the
result of too high carburetor float
valve Of the carbufetof, or merely
wrong adjustment Of the needle
tvalve.
| No "a car will go up hill back
ward apparently easier than forward
because the reverse gearing on most
cars is Of lower ratio than any for
ward speed.
No. THE first thing to do when
reaching the bottom Of a hill or
grade. down which the car has been
travelling with clutch out, transmits
sion gears engaged and motor idling
is to accelerate the motor to as great
Q speed or one greater than that at
which the car is moving before let
ting in the clutch. If the motor is
not accelerated to car speed when
clutch is engaged a severe shock is
given to the entire driving system.
resulting possibly in damaged clutch,
Transmission or rear axle unit.
| No. 8-To aid driving through heavy
sand use chains and debate all tires
to about one-third Of their air ca
pacity. Pump the tires again after
the car leaves the sand.
No. st is advisabl to protect the
rims from rusting. because rust eats
into the fabric of tires. The bead of a
tire which is carried length of time
on rusty rim will rot and weaken.
No. 10-The average ammeter test
dition is from 1S to 20 amperes.
Some New Questions.
No. What is the purpose Of the
vent pipe which extends from the
radiator hller cap to the base Of the
kept clean?
! No. 2-How will the addition Of a
co eolson ear nut no~n the
No. a-What fs the angle Of taper
| usually used for the friction surface 8
of a cone clutch? Why is this angle
No. Lwhen and where was the
fsst practical automobile engine in
| No, Show can ierky operation of
the foot accelerator be overcome by
driver just learning to operate a
| car? - 80 -
eNo. eff the rear wheels refuse to
propel the car on slippery clay road
and merely spin in one spot, what
should be done to remove the wheels
| from the ruts NADER?
| No. It's it advisable to use a dry
/ cell in q car when the cell shows an
ammeter reading of about eight am
peres?
No. S-what are two advantages of
block casting of the cylinders of
| water-cooled automobile engines?
No. 9-What parts within the motor
when loose or wern will create metal
lie slaps or knocking sounds?
No. 10-What is a. good rate Of
speed for a car to maintain on a trip
which will give the best mileage and
| insure safety and comfortable riding
for occupants of the machine?
Answers to Above Questions.
| ]. The purpose of the vent pipe ex-
| tending from filler cap to base of
radiator is to carry OF overflow of
water from the radiator, and steam
| and water -vapor generated when the
cooling system is overheated. If this
| pipe Is obstructed, damage to the
|