Omaha daily bee., 1916-05-21
LEAKS IN THE AUTO UPKEEP
Means Of Eliminating Waste Which
Goes to Swell the Case.
line Bill.
COMMON POINTS OF TROUBLE

I'm these days when the cost OF gaso-
line ia an item 10 be considered II be-
hooyes the owner Of an automobile 10
eliminate fuel waste" says n. G,
Brokaw, principal OF the West Side Young
Mems Christian association Automobile
school. New York City, who describes
ways In which losses often occur.
"One Of tho common points Of trouble"
says Mr.. Brokaw. rs with the intake
manifold, which has to do with the dis
| trfbution OF the gas mixture from the
carburetor to the several cylinders. A
leak at the carburetor side would prevent
drawing into the manifold a sufficient
supply OF the mixture. 80 that the cylin-
ders would be scantily supplied-perhaps
one or more not at all supplied. Likewise
air would be drawn into the manifold
/ through tho leak, and this would thin
the mixture coming from the carburetor.
As the mixture In the cylinders would be
thin II would not compress properly. the
firing pressure would be poor. the mix
ture would fire badly or not at all and
the power would be Iessened.
The natural thing TO do when the mis-
firing IL noticed Ia 10 open the spray or
| needle valve, admitting more gasoline TO
the carburetor and making a higher con-
sumption with no gain In power. The
proper thing to DO IA to look for leak
In tho intake.
IF the leak be on the cylinder side OF
the manifold II might be at ono or all
OF the cylinders The result would bs the
same as in the case just cited. poor
supply of the mixture, or some OF tho
cylinders might be properly supplied and
work properly, while the others would
be short Of the mixture and might not
fire at ali. The loss might be sufficient
to affect seriously the power and lessen
the speed OF the car.
THE manifold ought not to become
I, loosened in ordinary USE OF tho car.
There have been cases whore vibration
has done Il, but the usual trouble is
where the manifold had been removed
for some purpose and improperly re-
placed. Copper and asbestos gaskets are
ordinarily used. and these may be dented
or jammed out Of shape so that the Joint
is not tight, or there might have been
no shellac handy. or the bolts may not
have been tight enough Whatever the
reason. the leak makes weak mixture.
and the first thought OF chauffeur or
garage man is TO increase the gasoiine
at the spray nosEle OF the carhurutor. to
mako the mixture the right proportion
to fire. On account OF the mixture being
made up In the inlet manifold. instead
Of tho carburetor. the work Is not eff
GENTLY done and gasoline Is wasted and
tho expense increased.
Worn Valve stems.
Another leak which needs to he cor
rected frequently il az the valves Sc
much has been written about the care Of
valves that II would seem supsrfluous e
refer to II, hut regrindlng and proper care
pay big dividends IN efficiency and should
be ON the regular program. There Is 4
leak AZ the valve. however, seldom men
toned. though quite as serious as th'
others. which il due to worn valve stems
rhe valve stem should work snugly n
tho guides. but they wear a good dsal
particularly when an engine cannot b
throttled down close. The Wa0ciing Or th'