El Paso herald. (El Paso, Tex.) 1901-1931, 1915-03-27
Some Little ThingsthatM Make
a Motor Run Well or
May Spoil 1t

Most people do not place enough
Importance on little things but over
look the finer adjustments on a motor
which. in themselves seem inconse-
queutial, but really are what cOnsti-
tute the difference between a smooth
running motor and one which is ap-
parenuy all out Of tune.
For instance, unless the points OF
the spark plugs have just the right
gap, a motor will miss running idle
or even when pulling at very low
speed This is especially true If the
gap is too small because at slow speed
the cylinder is not completely filled
with gas. and the gas is not so highly
compressed, so it requires a larger
and longer flame TO ignite ii.
The Plugs.
Many motors cannot get any salts
factory results from plugs in which
the side wire attached 10 the metal
body OF the plug extends below the
center insulated wire because the low
er wire separates OF hides the spark
from the gas.
II is very important that one use
the best spark plugs. Of such design
that the spark takes place in the open.
and that they all have the same gap
between a thirty second and a six
teenth Of an inch, according 10 the
magnetic used A defective plug can
easily be located, because it will miss
fire on the getaway or on a hard
pull but may not do so running az
ordinary speed
Leaks.
Another reason which is often over
looked by the driver and repCirman,
Tor a motor cutting out on one or
more cylinder when throttled down,
is a leak in the intake manifold,
Many new carburetor has been pur-
chased or magnetic overhauled. when
the replacing OF a scent gasket be-
tween the intake pipe and one % the
cylinders would have eliminated all
the trouble.
This case is as easy to discover as
u is TO remedy II one will open the
throttle with the spark retarded he
can hear the air being drawn into
the leak or at least, can feel It by
passing the fingers lightly over the
connections. If his sense OF hearing is
not good, he can put some cylinder
OIL on the joints and it will be drawn
INTO the engine at the point where she
leak occurs.
Exhaust Valve.
A very common cause for missing"
winch has often puzzled the driver,
since the advent OF the self-starter,
is the leaky exhaust valve. often a
valve viii be held open by a piece OF
carbon on the seat thereby releasing
the compression of the cylinder i'm
which il is located. This viii cause
miss on that cylinder both with
and without the use Of the throttle,
Tor which the carhuretor or ignition
Is often held responsible.
In the old DAYS of the starting
crank anyone at all familiar with his
motor would discover that one Of his
cy lnders pulled over easier than ehe
rest but in these times Of Ease and
comfort he is not on speaking terms Z
with the crank. so must place himself I
IN lne hands Of his garage man. Too /
often his entire set of motor bclrfr Is
are uShtened up to overcome a pound !
IN the motor, which is caused rom a I
weak cylinder, placing an overload On ]
the cylinder following in the turing Z
sequence. when the removal Of a lit {
lie piece Of carbon from beneath the ]
exhaust valve was all that was needed. /
Compression.
sometimes motor with strong COM I
preston on all cylinders, new spark
pIugs tnorughout and first-class ad- I
Juslment on the carburetOr. viii run
splendidly as long as the motor is turn 4
inE over rapidly, but will miss" bad 3
D. and even stop when allowed TO slow .
down Invariably this is due to weak
in the magnetic, and the ms
trument should be turned over to an
electrical expert TO have the magnets
charged or magnetiZed.
The electrical equipment of a moor
car consisting of the magnetic, gem
orator, starting motor and storage bat
terry, are the most delicate and per
.shaole parts, and great care should
be used in their selection by the car
The AppersOn brothers,
realizing the vital Importance OF main
tanning the standard on the same plane
with that Of their new product have
spared no expense on that feature. but
have supplied instruments on medium
priced cars heretofore unheard OF on d.
ears at the same price, and only found
pm cars selling at three times the price
)f the Apperson Jacllrabbit.
The CnrburetOr.
The most slanderCd piece OF mech /
lnlsm on motor, accused and held !