El Paso herald. (El Paso, Tex.) 1901-1931, 1913-07-12

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flame passing through the exhaust
valves they viii pit and warp beyond
use The loud noise YOU speak Of IS
natural result Of late timing 1t is
POSSIBLE that your trouble simply lies
in the spark Would advise your in
spection Of this first
Motoring Department, The Herald
IS lhere any advantage IN putting
lubricating oil in the gasoline Are
any motor car engines so lubricatedE
IS. ID. Friend.
There are a number Of cases where
lubrlcatIng oil is used in the. gasoline
and in this manner fed to the cylin-
der. There are no particular advan-
tages to this system However. in
cases where two cycle motors are used
it is necessary and advisable.
Motoring Department. The Herald
Can a vibrating coil be used in place
OF q nOn-vibratiGg coil, and if so how
can it be GOne--W. L. VI.
Tt is not practical to use an Ordi-
nary vibrating coil in place of non
vibrating coil. The usual vibrating
unit IS used in connection with bat
terry The non-vibrating type is used
with magnetic. In the latter case the
current generated is much greater,
hence coil capacity must be much
greater. Again, the construction of the
coils differ. The function of the vi
orator is TO autCmatlCaI interrupt
or make and break the primary circuit
to help induce the desired high volt
age secondary current Where the
magnetic and nOn-yibrating coil is used
the iuterruDter or circuit breaker OF
the magnetic aCcOmplshes the make
and break OF the primary, and accord
ingly eliminated the use OF the coil
vibrator
denser connections are different in the
two coils. In the vibrating coil no
condenser connections appear, since
the terminals are within and across
the vibrator In the nOu-yibratiEs
coil one condenser terminal appears
outside. This must be attached across
the breaker in such a way that the
condenser action may be obtained
Even though the vibrator may be cut
out on the vibrating coil, and the de-
sired condenser and other connections
made 1t is not advisable or practical
to overload a coil which IN no way
was designed for the work The coil
would undoubtedly be ruined very
quickly.
Motoring Department. The Herald
Please give me some information as
10 how the exhaust valve of my mo-
tor should be timed The cam shaft
gear broke and l do not understand
how TO set the new gear back IN
place. I understand that il must work
with the intake valve, which is on the
other side of the cylinder How should
the gear be Ser2-R. FerEeSOu.
The exhaust valve should open about
40 degrees before bottom center ana
close about 10 degrees past top center.
The fyWheel of the motor is usually
marked TO indicate when exhaust
valve should begin TO open Determine
the firing stroke of number one GYM
der, and when piston IS about three
quarters down note the flyWheel marx
There is usually a pointer TO guide
When pointer is opposite marx, the No
i cam of the cam shaft should be
about to raise valve litter In this po-
sition the gear should be engaged in
the flywheel 10 guide YOU il viii be
necessary to chalk mark. or otherwise
subdivide the wheel Bear in mind
that the lead to valves differs on dill
ferent motors, depending upon the de-
sign and r. D. M The forty degree
lead mentioned is approximately cor
rect, but to be accurate would sug-
Eest that YOU obtain this Information
correctly from the manufacture OF
the motor.
Motoring Department, The Herald
have a four cylinder 80 horsepower
car Of this years model which has
suddenly developed a peculiar missing
The car is equipped with magnetic
and misses on cylinders two and three
at all speeds. and hits as well as ever
On cylinders 1 and 4. There is no
spark at two and three whatever,
while I and 4 have a strong spark Inc
wires are in good shape, also the plugs,
What is the remedy for this troubleE
Frank 5. Murray
The trouble. it appears. lies in the
primary interrupter in the magnetic
one of the cams which operate this
without doubt is worn or defective
and does not cause the interrupter
POINTS TO open There are Two cams
operating the interrupter which Work
alternately. The firing order OF your
engine is either 1-2-4-3 or 1912, and
it is evident that one cam operates
for the spark in and 4 cylinders and
the other cam for the and cylin-
ders. The trouble may be located by
removing the magnetic and revolving
the armature slowly by hand Watch
the interrupter points to see If they
separate properly every half revolution
Of the armature shaft
, $500 $500 + = + , =