Evening star., 1921-06-19
Answers to Last Week. Questions.

| Answers to Last Weeks Questions.
1. To shift the transmi ssion gears
properly from high to lower speed
| leave the throttle open enough to
| speed up the engine about twice as
fast when cultch is released as it ran
when clutch was engaged. When dis
| engaging clutch release it only
| enough to relieve the engine of pull
ing the load do not push clutch
pedal all the way down. The gears
| should mesh without the disagreeable
grating noise often heard when not
| changed properly.
2. A carburetor floods or overhows
and drips because the gasoline inlet
valve or hoat valve does not seat
tightly, permitting the gasoline to
M the floating bowl to overfiowing.
operation of tho inlet valve 10 con-
trolled by the float within the carbu.
gasoline enters. the float, rising with
the gasoline. automatically shuts of
the flow. When the engine Is running
gasoline In the bowl is drawn from it
level. when the inlet valve again
opens. Thus tho valve opens and
closes with every suction stroke of a
piston' The valve. which is usually a
ASSuics Iuc emu OF WHICH
seats in similar shaped depressi on
to close off the entrance Of gasoline.
often wears out of true with its seat,
causing the leakage of fuel into the
| carburetor. Sticking Of the float SO
| will not close the valve is another
| cause Of leakage.
| j. About the only attention neces-
| sary to keep the magnetic in good
running condition is to see that it is
l u
| oil and water and to keep the contact
points of timer and distributor prop
| eriy adjusted. Oil the bearings with
only a few drops OF very thin oil
and moisture from the exterior of the
housing. Clean the distributor and
timing contact points and their COW
ers. The setting Of the timer con-
facts should be about the thickness
plug points should be apart about the
| thickness Of a dime
| =. In going down hill. il it Is de-
slraoie TO change gears to a lower
speed the change should be made be
momentum. Lower speed should be
used if the road is rough or slippery
or II the hill Is very steep. when the
constant use of brakes is to be
! avoided.
| Going up hill low speed gears should
1
gine drops to a point when q pound
| ing and laborins begins to be heard
Average sized hills are usually ne
gotiated on high gear il the engine Ia
in good condition and the spark is
| retarded at least half.
| 5. Kissing noise heard while an en-
gine is in operation indicates leak
| ing compression in one or more cylin-
derS. The fuel mixture within the
| cylinders while being compressed
Z u.
the cylinder head. no matter how
| small. such AS loose sparkplugs. valve
! caps or printing cups. A bit Of fake
graphite mixed with oil applied to
| threads of plugs, caps or printing
cups often seals leaking at these
! the parts. A bad sparkplug gasket
, should be replaced with a new one, as
! also should the cylinder head gasket
i if that is where the leak occurs In
\ this style Of engine.
| s. On most makes Of cars the
| bushings for bearings are made OF
anti-friction metal, which is usually
bronze or babbit. The advantage OF
using soft metals'is that If the bear
ing became too tight no injury would
be done to the shaft around which
the bushinE was fitted. the bushins
! is that if there were several high
! spots on the bushing surface, caus
! ing increasing heat at those points
! the bushing would not be 50 apt to
seize. but would yield. producing a
! more even surface.
| Z Before oiling chassis make
sure that all oil holes. even though
they are provided with covers, are
free of dirt. Merely placing oil in
| the proper cups does not always in
dicate that the friction surface be.
meath is being fabricated. II the oil
| passage was clogged with sediment
| probably no oil would penetrate tc
| the point where it was needed.
| s. There are a number of points
| which should be considered when
| purcha sing either a new or used car
| Is the engine powerful enough 70,
the car weight. insuring flexibility
! economy and otherwise OF the kind
! to give efficient service? Do the
brakes hold sufficiently to stop the
car on real hill? Does the clutch
| take hold gradually and smoothly
| when the pedal is released. and when
the clutch is engaged does it hold
tight enough to traismit power tc
the rear wheels without slipping?
Does the car steer easily, do the
transmission gears shift freely. and
does the car ride smoothly, quietly
and pass over bumps without jarring
the passengers? In case Of repair, are
removable parts. nuts and bolts, etc.
accessible. requiring less time and