The Daily Ardmoreite. [volume] (Ardmore, Okla.) 1893-current, 1921-10-02

has grown worse year to year. In the
early days of motoring the gasoline
we used would evaporate If YOU gave
il half n chance; nowadays it won't
but requires encouragement. coaXins
and even the application of heat be-
fore ii will consent to do our work.
This has resulted in loss Of powel,
lack of pep and. what is more serious,
an accumulation of gasoline in the
oil base or crank case This may
he due to failure to pre-heat the mix
ture sufficiently or to defects in the
cylinder walls or piston rings.
on account of the difficulty of evap
Grating the gasoline all engines now
have some means of warming the air
before it enters the carburetor and
the mixture as 1t passes through
the engine block is further warmed
by the water jackets. Some manifolds
are designed that the heat OF the
exhaust is transmitted to the inlet
gas and those places in the mani
fold where liquid gasoline is apt to
accumulate are specially heated so as
to vaporize it Immediately. This is
known as the "hCt-spot" type. Usually
there is metal sleeve placed around
the exhaust manifold or made part
of the casting, called hot air stove
The fresh air from the carburetor il
drawn through this device and so re-
ceives the heat necessary to evaporate
the gasoline. Then again, some of
the hot water from the water jackets
is piped to the carburetor or the in
let manifold. which are also provided
with jackets. But these devices only
operate after the engine is warmed up
so there are several electrical de
vices on the market which use tho
current from the storage battery 10
warm a resistance oil placed in OF
around the inlet manifold. This gives
the necessary heat for starting.
II no electrical device is used TO
heat the incoming air, when an at
tempt is made 10 start the engine
only a small part of the gasoline
is evaporated. the rest of the spray
falling along the inlet manifold and
being prevented from flowing back
into the carburetor by the rush q
air If the engine is allowed to rest
after such an attempt the gasoline
will flow down and may be seen
dripping out of the carburetor When
the engine is started some of this
LIQUID gasoline will be carried up into
the cylinders and will cling TO the
walls of the combustion chamber and
.. ,f Ia, tnnrf
it will try to work its way down by
the pistons into the crank case. The
rings may be tight enough, but the
gasoline mikes with the oil. thinning
il, and making it easier TO pass down
on the compression stroke there is
downward pressure of gases past the
piston which is increased enormously
on the power stroke and the thin oil
half gasoline. is forced down. This
mixes with the oil in the crank case,
accommodating day by day. until the
oil is too thin to have any lubricat'
ing value This thin oil is readily
sucked up past the pistons on the
suction or admission stroke, where II
helps to carboniZe the engine. II is SC
thin that it makes an imperfect
seal around the rings. so that power
is lost ana more gasoline comes down
Thus the vicious circle goes on.
But gasoline in the oil base may
also be caused by scored or worn
cylinders and piston rings. These al
low spaces through which the gaso
line may work down and the oil
work up. If the engine is badly car
bonized the piston rings may he gum
med into their grooves. making them
the same size as the pistons; this
will give the same effect Stuck rings
may be remeded by pouring half
cupful of kerosene into each cylinder.
letting IL stand over night, and work
ing the engine with the starter in the
morning. This usually shakes the rings
loose. But scored or worn cylinders
call for repairs and the engine must
come down.
In case the engine parts are in gooo
condition we must devote our atten'
tion to the mixture of gasoline and
air We must buy as good gasoline
as possible; use the chokcr sparingly
and be So. TO open 1t as soon as tht
engine starts; keep the car in warm
place in winter; watch the quality Of
the oil in the base by drawing off n
little occasionally on the hand or on
a piece Of paper. II IL j. found t.
be at all thin II should all be drawn
Off and saved for other purposes
There is some question as TO whethe,
the oil would still be serviceable II
the gasoline We're allowed to evapo'
rate. If 1t is not much discolored the
oil may be used again, but ii II is at
all black its lubricating qualities
have been reduced. II is still good
enough for use In the squirt can for
such bearings as the pedals and lev.
ers around the chassis. brake con
nections & etc. but 1t should not be