Evening star. [volume] (Washington, D.C.) 1854-1972, 1912-05-12

CONTINUED From Fifth Page,

power" says o prominent motorist. IAN
experienced driver cannot enjoy riding
behind an irregular engine. The I'M
trained ear cannot detect these irregu-
forced to do Its work under abnormal
conditions. Many efficient cars have
been condemned simply because the
power plant needed little tuning up
previous to a trip. Any one Of a dozen
small things may happen that will spoil
the pleasure of a day. If not cause seri-
GUS damage to the whole mechanism OF
the car.
Before starting upon a journey OF
any length one should always set aside
q few moments for inspection of the
motor. 1t Is much easier to make
small repair in the garage than It is on
the road While the general mechan-
ism Of the car back Of the motor may
not need close observation, the engine
does
''It is not uncommon for a motor to lose
its compression overnight. While this
loss Of compression is not a difficult mat
ter to remedy, 1t nevertheless is the basis
Of most engine troubles and most certain
ly determines the efficiency of the motor
The compression OF each cylinder may
easily be tested as follows: II a four-cyl-
inder type release compression on cylin-
ders two. three and four and try COM
preston OF number one by cranking. If
good. then open numbers one three and
four and try number two. Likewise test
the others. In this manner the faulty
cylinder may be located.
IF the compression in any cylinder
should be weak, then the leak must be
traced. Quite often it happens that there
may be loose valve cap or faulty
spark plug. 1t may be the compression
cock. leak about the external joints
Will readily be noticed when the oil is
placed on them and the motor cranked.
II all are found to be tight, then the COM
preston leak must be internal. probably
the valves. OF the two valves. namely,
the intake valve and the exhaust valve,
the latter should be inspected first. The
new gases. when drawn into the cylinder,
have q tendency to keep the intake valve
clean, while the exhaust valve becomes
foul from the passing of burnt gases and
carbon. A small piece of carbon will un
seat the exhaust valve and cause the loss
Of compression. With a little emery and
oil and slight grinding the valve may
easily be reseated.
Carbon deposit on the exhaust valve
seat Is a common trouble. but not the
only one that causes loss of compression.
A warped valve stem. especially in motors
| inclined to overhead. is very common. In
such instances 1t is best to replace the
valve with a new one. Then, again, the
valve adjustment at the base of the valve
stem proper should be noted. There is a
certain clearance at this point to allow
for the expansion of the valve stem when
heated. At this point there should always
be q clearance approximately the thick
| ness Of a calling card when the valve is
seated"
Detroft's first motor car factory to be
devoted entirely to the manufacture of
| sfx-cylinder cars Is the new plant of the
Lozier Motor Company, which recently
celebrated the second anniversary of it's
establishment in that city. This an
nouncement was made yesterday by an
official of the company in verifying the
rumor that the Lozier had discontinued
the construction of four-cylinder cars.
TT Is only few seasons back since
some of the most prominent automobile
manufacturers pronounced the six-cylin-
der car a mere fad" says c. A. Emise.
sales manager of the LoZier, in comment
ing on the change in his company's plans.
To-day it is generally acknowledged that
six-cylinder motor Is a necessity on a
high-powered car. Our decision to dis
continue the building of four-cylinder
cars was reached several months ago.
and when we announced our 1913 models
the manufacture of four-cylinder cars
was discontinued.
THE six-cylinder motor. however. owes
its favor In the minds of the public. not
ity in meeting conditions of city traffic
and touring. The four-cylinder motor is
undoubtedly suitable for the smaller cars,
but where long trips are to be taken and
additional power Is required six cylinders
offer satisfactory solution. It's hexibil-
| ity OF control renders it most perfect for
town and country use, as with the better
grade of skies II is possible to secure
| from four to sixty miles per hour and up
ward on direct drive. thus eliminating
| the constant changing of gears formerly
| necessary. In hill climbing and other
| features of cross-country touring the
skies have demonstrated times without
number the Increased efficiency obtained
| from the two extra cylinders "A.
| X II
| Details are being worked out for the
convention of sales managers of the au-
| tomobile board OF trade to be held in the
near future.
| The dates have not yet been definitely
| settled upon, but they will probably be
| the latter part of June or early in July.
| the idea being to hold the convention
| when IT will be most convenient to all
| concerned.
| The program will include the prepara-
ton and reading of papers bearing upon
| subjects peculiar to the sales department
| of the automobile manufacturer. and will
| be beneficial not only to the manu-
/ IA but tn the dealer and individual