El Paso herald. (El Paso, Tex.) 1901-1931, 1913-05-17
Copyright, 1918, By ". H. Stewart, j.
By WILLIAM H. STEWART, j

/
I Few minutes, 1t VIII start 1 have
I noticed the same trouble in other cars.
but on opening the relief cocks, and
, spinning the motor they viii start at
once Ny car has no relief cocks, and
j at times am at loss to know how
/ 70 start It The car came equipped
with a carburetor. which the agent
3 changed TO another model Why this
[ was done / do not know, as the former
I worked well With the carburetor al
[ lusted as closely as possible. il over
{ on the nigh speed. Do you think the
( change Of carburetors has anything to
{ DO with this and the failure to start?-
! C. n Roxy
Most of your trouble is due to A
ricn carburetor mixture. By opening
/ the petcOcSs in the Instance you mea-
ton more air is let into the cylinder
ana better mixture obtained for
starting A very rich mixture will not
ignite as readily as a very lean mix
Z ture. Would advise your changing the
adjustment Of carburetor to obtain
better mixture. The float level NAV
be too high and the valve spring may be
. too neavy. Would also suggest that
you note the adjustment Of the spark
plug points. When the spark gap is
large, starting becomes difficult The
spark gap should not be over 1872 Of
an inch
Motoring Department, The Herald
nave a - car with a gas tank in
stalled on the rear. and / have a lot
Of trouble keeping the air pressure I'd
There is room enough under the seat
Tor the tank, and 1 would like to
know II it would be better to use a
gravity system instead of the pressure
system If not, how can ] remedy the
trouble with the present tank ~
St D.
If you have the room under the front
seat to install sufficiently large tank
II viii serve your purpose, providing
the level Of the gasoline is high enough
above the CarburetOr to allow the prop
er feed in going up hills. There is no
particular advantage of one system over
the other when properly installed. The
trouble with your present system is
that there is an air leak somewhere
proper pressure This leak may be in
any one Of a number Of joints. which
If located and remedied, will eliminate
the trouble It is much easier to stop
the present air leak than il is to in
stal the gravity system.
Motoring Department The Herald
one OF the coils on my car was soaked
with water the other day and since
that time 1T has not worked. although
I tried different adjustments of the
vibrator what can 1 do with the coil?
Nothing viii deteriOrate a hich ten
sion coll more rapidly than til ~0uce
Of moisture in the winding -r is
a fairly good conductor OF 7iLy.
and when the insulation OF ron-
dairy becomes soaked the current short
circuits me primary WllCluE IS not
as sensitive as the secondary winding.
due TO the voltage being much lower )
con affected by moisture cannot be re-
pared except by those experienced in
Motoring Department. The Herald
4 bout how often is it necessary to (
change the oil in the crank case Of my (
Most people deem it advisable TO
cleanse the crank case at least every J
1000 miles. After having removed the
oil through the plugs at the bottom of
hte case 1t is a good plan TO fill the (
case with kerosene, then start the en-
gine, run il for a few seconds and then
drain off the kerosene thoroughly. Then
fill with fresh oil The kerosene cleans l
the crank case and cuts the Eummed I
oil and other foreign matter which may /
nave lodged In the various recesSeS
Motoring Department The Herald /
I have a --- car with a - car 1
buretOr which viii not run slowly. It /
seems TO work well enough with the ]
throttle opened to pull the car. but that 4
Is All The engine seems to be in /
good condition WHAT do YOU suggest ]
Many things prevent motor from |
thrOttlinE to low speeds. Usually the
trouble IS In the carburetor adjustment Z
At SLOW engine speed the air valve /
should be closed. If you feel the car
buretor is right then test for air leaks 1
in the manifold. A slight leak in the 4
kets vii Icause your trouble. The spark /
sap at the plugs should not exceed 1-32 /
Of an inch. Each cylinder should have 4
strong and equal compression
Motoring Department. The Herald 4
(a) VIII you please inform me what the 4
is on the average carr CD Does the I
compression increase as the speed Of
the engine increases2 Co Has the use [.
Of fiber for timing gears proved salts
2 p Of nv - II =
(a) The a verase compression is about 4
s. pounds per square inch. OBJ The conf
preston increases slightly with the /
speed. due mostly 10 greater heat eff 4
cheney. (c) II properly constructed !
fiber and bronze gears viii work well !
The tendency Of late designs. however,
Is to eliminate fiber altogether
Motoring Department, The Herald
How can one prevent too much oil get
ting into the two forward cylinders? /
The crank case has a circulation pump
that pumps oil from the suitcase to the
front end Of the crank case. where it !
flows back into the rest Of the case
Frederick R. COudert-
If you have described your trouble
correctly. the design seems rather
poor Usually in such lubricating
system the oil is not pumped directly
INTO the front Of the crank case, but
rather into each cylinder compartment
separately-that is to say, there would I
be four points of delivery to the pump. 1
instead of only one Il the construction I
viii permit perhaps you can arrange
10 have the oil delivered in this man I
ler Usually there are partitions separ-
ltng the oil level compartments, and
which VIII serve the purpose of keep
ng the oil more evenly distributed in
climbing hills. etc The simplest way
IF remedying your trouble would be to
ut a groove in the top of the partition
between the forward cylinders, thereby
OWering the oil level of the two COM
lartmeuts. This lowering Of the. oil
specially where motors have a ten
iency to smoke.
- HELPFUL HINTS TO .
- MOTOR CAR OWNERS .