El Paso herald. (El Paso, Tex.) 1901-1931, 1913-11-02
HOW TO STOP
MOTOR BOILING
fabrication Is Pulling; the
Best Obtainable Oil
Should Be Used.

from c. J. Morrison, New York City
and was as follows;
"Overheating may result from any
one or a combination Of the following
spark retarded and, consequently,
the use of too much gas
TOO rich mixture.
''Too little water in radiator
"a dirty radiator-the dirt may be
either inside or outside.
Too hard pull on nigh gear
TOO fast q run
Poor fabrication.
Carbon deposit.
''Muffler choked up
There NAV be other causes due TO
a poor design of engine and radiator
but in answering this question the as
sumption is made that the car is prop
erly designed, and that the ogerheatlnS
comes from operating causes
"A spark retarded is a very frequent
cause of overheating, and can easily
be overcome by always operating the
car with the spark advanced to the
highest possible position without
knocking. The proper point can be as
certained by a little experimenting.
Many cars are operated a large por-
ton of the time on too rich a mixture,
and many operators do not know now
to detect such condition ASSUMING
a good carburetOr, an almost sure test
of the mixture is TO run the engine at
throttle wide open If the mixture IS
throttle wild open If the mixture IS
too rich the engine will choke down,
and in some cases will actually stop
In case the car is one having high and
low speed adjustment the engine must
be operated at a speed just above that
used for the low adjustment when test
ing.
FIJI the Radiator.
Probably the only safeguard against
lack of water is to always fill up the
radiator before starting for run.
"A splendid way to overhead Is to op-
crate with dirty radiator, and the
only remedy is, of course, to carefully
wash off the outside of the radiator
and to clean out the inside with hot
water and I've. after which several nil
ings of clean water should be run
through the radiator before it is final
" filled up for run trouble on the
inside of the radiator viii be avoided,
to a great extent. by always using
clean water and straining that
In districts where the water is very
hard, and distilled water is not obtain
able, the water for the radiator should
be boiled to throw down the lime be-
fore it is placed in the radiator.
MANY of the best designed cars have
been badly overheated by too hard
pull on high gear. This condition is
particularly liable to happen on a long
stretch of very sandy road In fact,
the writer has seen some of the best
cars in the country badly overheated
on a notorious stretch of road in New
England. The remedy is to run on the
CINE speed and a little gas
Use Coed Oil.
MANY of the smaller cars are de-
signed to run at speeds of 20 TO %
miles per hour. and viii invariably
overhead if crowded up to higher
point If the owners desire hlSher
speed, the only remedy is to install
larger radiator. or to purchase car
designed for this speed.
Poor fabrication is one Of the hard
est causes of overheating to detect, and
is one which is liable to do the greatest
amount of damage
The best Obtainable lubricant should
be used, and as few people are willing
to take the time and trouble to test
oils, it is best to stick to well known
brands Almost all cars are detective
in the matter of regulating fabrication
in that there Is no adjustment which
can be made from the drivers seat, and,
consequently, the same amount Of oil
is fed per revolution Of the engine, re
gardless of the work it is doing. 1t
should be possible to feed a greater
proportion and quantity of oil at high
speeds and al low speeds with a full
throttle than under other operating
conditions.
Carbon deposits in the engine will
cause overheating. and is at once de-
tected by the backfiring and knocking
which results.
ChoIzed MuffIer.
"a stopped-up muffler can at once be
detected by the loss of power in the
engine, and the fact that it will not
operate at low speeds, and can, of
course, be remedied by taking off the
muffler and cleaning It.
Although so many causes may
contribute to OVerheating, their reme-
dies are so simple and are so much a
matter of pure common sense that it
seems a little watchfulness as to the
operation of the engine should avoid
all trouble"
Another reader. Roy H. J. Wood. Of
T~rra n =11r ion
1.-The most prevalent causes of over
heating may be grouped under three
heads. viz: Mistimed ignition, improper
prOportionment of the mixture and de-
rangement OF the cooling system. In
the case of misimed ignition, the fault,
generally speaking, is to be found in
the manipulation of the spark control,
for there are many otherwise excellent
operators who habitually drive with an
insufficient advance Now this has the
effect of retarding ignition to such an
extent that combustion is incomplete
at the moment when the exhaust COM
menceS- The consequent high temper
ature of the charge during the follow
ing up-stroke partially balances the
heat losses in the cooling system during
the idle strokes, and the result is an
abnormally hot engine, with overhead
ed exhaust parts, valves and manifold.
1t Is, of course, quite possible for some
part Of the timing linkage to slip out
of adjustment. The locality of such a
a
examination, and its remedy may be
effected by bringing any piston to its
upper dead-center, moving the timer
toward retard until the contact breaker
is on the point Of opening and finally
(while holding the timer in this posi-
tom adjusting the control lever to
within, say, an inch of the extreme re-
tard on the sector.
Over-rich Mixture.
1.-The effect of an OYer-rich mixture is
very similar to that of a mistimed
spark, for, since it contains insufficient
ai- combustion is necessarily slow, and
continues throughout the exhaust
stroke The adjustment of the numer-
Gus carbUretors in modern use differ so
widely that a detailed set of regulating
instructions for general application is
a practical impOssibility. However. a
few hints may be useful. When the
motor is running with closed throttle
and retarded spark the auxiliary air
valve should be set to remain unopened
IF the gasoline nozzle has a variable
opening, it should be adjusted until the
motor runs well and evenly; if not. the
proper regulation may be secured by
a nozzle of more suitable
size. Then, with opened throttle (and
with the spark well retarded, the
auxiliary adjustments must be made,
after which, assuming that all else is
in good order, the motor should run
evenly, smoothly, and without either !
backfiring or creating the unDleaSant [