Evening star., 1937-04-18
YOUAND YOURCAR
A|DEDB RUSSELL
Incorrect Carburetor Mix.
ture or Poor Ignition May
Cause Improper IdIing.
BY FREDERICK c. RUSSELL

| Rattles IN the car must make some
childish drivers feel very much at
home.
Rubber mountings for engines do
cause certain amount of movement
In the shift lever, but it is not true
tnat an engine so mounted should
snake itself when in process of idling.
ANY such shaking or trembling indi-
| Gates that it is not idling properly.
This may be due to incorrect car
ouretor mixture or to poor ignition.
With the aid Of modern testing equip
ment a service man car easily deter
mine what's wong. In nine cases out
OF 10 the engines trembling can be
cured by a careful adjustment of the
mixture
Keeps Ammeter in Action.
That wiggling of the ammeter point
er is nothing to worry about, even
though it does suggest loose connec-
ton or possible brush trouble in the
generator itself. The wiggling is just
part of the new era in motor car be-
havlor and is explained by the addi-
ton OF voltage regulator to the elec-
trical system. When the regulator cuts
in and out it is likely to cause the
ammeter indicator to flicker. The
swing may be quite wide
This is more likely to occur when
the car is being driven at a moderate
speed, as when being broken in. That
is also the time the car owner is
more apt to be overattentive to the
cars behavior At higher speeds the
regulator remains constant, permitting
the ammeter to keep to a more even
keel.
The wiggling Of many an ammeter
pointer has led some owners to believe
that the indicator is particularly sensi-
tive to road shock. They could sat-
lsfy themselves on this point by run
ming the engine at varying speeds
while the car is standing still.
Care Putting Back Cleaner.
When replacing the air cleaner, after
the periodic removal for cleaning, be
sure to see that it is properly attached.
Some cleaners have a special shield
which should always be placed facing
the front of the car. This shield helps
the cleaner do a better job by defect
Ing much stray dust that blows into
the engine compartment, and by
forcing the carburetor to draw air
from the rear end Of the cleaner.
Some OF the cleaner units must be re-
placed so as not to interfere with
throttle action. It is also important
to refrain from tightening the cleaner
too much, as the carburetor intake
flange is easily bent so as to cramp
the choke valve.
Mechanic Joe Speaking,
One OF the strangest things about
motorists is the way they will 90 along
putting up with certain troubles when
IL Is so easy to make sure Just what
particular part Of the car is causing
the grief. Take radiator, for in
stance. Note how owners will 90
along for weeks wondering whether
the overheating is due to a clogged
radiator. To make sure about the way
this unit works all the owner needs to
hose and pour water into the top of
the radiator. If the core isn't clogged,
water will flow through rapidly"
Give Brakes a Break.
Brake drums are among the special
units which too often are complete
ly overlooked in the process Of keep
ing the car in safe and efficient con-
dition. Service men believe they
should be examined every 5000 miles
or thereabouts. Inspection may re-
veal such conditions as scoring and
warpage. Usually there will be an
excessive amount of "dust" in the
drums. This should be removed,
even though the brakes will not
seem to operate as effectively after
cI1ch rloanipo