El Paso herald. (El Paso, Tex.) 1901-1931, 1920-12-04

l. What rEuil6 VIII TOO luucu pElul-
ing as may often happen in cold
weather. have upon the engineL
. What cooling system trouble
common I'm winter. viii cause over
heating Of an englne-
8. can wool alcohol or kerosene
be used an as antl-1reeze solution IN
4. When the steady application OF
brakes is necessary on long NIL.
how should the brakes be applied
8 How can a rear end skid, which
usually occurs to the right. on an
oval or rounded road be cOrrectedt
g. How can a tire casing with
blowout and the fabric otherwise
bruised or broken in several places
be corrected2
Z. Why IS copper wire used as a
conductor I'm the electric system and
why are certain sizes Of wire re-
quircd2
g. What is pre-iEnition.
Q. Why viii SPARKLING points set
too far aprt cause misfirinE Of an
engine when its speed is acceleratedg
10. How can the auxiliary air in
let valve Of a carbureter be tested
and adiusted2
Answers TO Last Weeks Questions.
I. In a single wire electric sys-
TEN either terminal may be grounded
as the flow Of electricity viii occur
Just the same AS a rule the posi-
tive is the grounded terminal.
2 You can soon tell II the carDu-
rotor mixture Is correct BY opening
the petcocks at the tops Of the cylin-
ders (if the engine has them) one at
n time and noting the color OF the
flame which emerEes from the cylln-
der while the engine is running II
the flame is faint blue the mixture
Is correct II IL IS red. too much gas
oline is being consumed, and il the
flame is yellow the mixture Is too
lean.
8. The greatest amount Of efficlen-
cy from an engine while in operation
is obtained when the cooling water
has a temperature Of from 10 70 $50
degrees. II OF a lower temperature
the gasoline vapor has a tendency TO
condeuse and causes poor engine op-
Grafton and carbon deposit II OF a
higher temperature the water VIII
evaporate quickly and boil
1. To aid starting a cold engine
in winter. before stopping the engine
accelerate its speed by opening the
throttle Then switch off the ignition
and a quantity OF the carburetor mix
ture viii be drawn into cylinder
where It viii remain until the engine
is again started
8. The oil pressure gage on the
dash sometimes registers mgn Oh
pressure ct slow engine speeds when
the engine IS first started This is
due 10 the CONCEALED oil In the line
leading TO the gage and also in other
parts OF the lunrlcatlnE system II
this condition exists only as long as
the engine is cold there is nothing at
fault, but II high pressure IS con-
tinually registered even after the en-
CINE Is warm the fault lies in cloEged
oil lines or the gage is out OF ad-
justment-
6. Experiences has taught many
drivers that the slow intermittent ap-
plication OF brakes will give the best
results IN stopping the car on Slip
perry pavement Steady application,
especially when too much pressure IS
exerted on the brake pedal may cause
locking OF the rear wheels and skid
ding. and has caused many an acci-
dent.
9. The cause Of too lean a carhure-
tor mixture IS too much air and not
enough gasoline, "a condition seldom
encountered in the average carr The
trouble may be due TO a fault OF the
carburetor itself such as gasoline or
spray passages. blockaded, throttle
valve out Of adjustment or spray noz-
zle clcgged, or there may be a block
ade or a break in the gasoline line
from supply tank 20 carburetor. The
outlet at the tank may be partly
clogged. there may be water in the