The Daily Ardmoreite. [volume] (Ardmore, Okla.) 1893-current, 1916-06-11

even when an experienced man is
doing the work. Here is another
reason for carburetor shortcomings:
The owner takes his car to a repair
man TO have the carburetor put in
perfect condition; the latter is a good
mechanic and obtains a fair setting
in a short time, but try as he will,
he cannot make it perfect. The re-
suit is that he gives it up as a bad
job as soon as he has spent as much
time as he feels the OWNER can rea-
sonably pay for. He cannot explain
to his customer that it might take
several hours TO obtain a best ad.
justment. If he did he would be
looked up as a poor repair man. SO
he tells him that it is the best that
can be done and the customer takes
his word for it. All of which is
somewhat aside from the subject of
how to adjust a carburetor, but
nevertheless is something that every
owner should fully understand.
The symptoms of carburetor trou-
BILE and how they may be remedied
by adjustment will be considered
this month, and in June the adjust
ments of the popular makes of car
buretors will be described.
Diagnosing for the Carburetor.
In adjusting a carburetor the first
essential is to be able to tell the diff
ference between weak and a rich
lack power and may knock, and with
too rich a mixture it may also over
heat.
If there is too much air the motor
will not respond Immediately when
the throttle is opened quickly; there
will be a lag from the time the ac-
celerator pedal is depressed until the
car begins to gather speed. The
motor may also back-fre, especially
at high speeds.
With too much gasoline, on the
other hand, the car will respond in
stantly to the opening of the throttle,
but with not the same vim as with
a perfect mixture. A great excess of
fuel will produce black smoke in the
exhaust.
Too frequently. when one of these
symptoms is recognized or the car
is operating badly for any reason at
all. the conclusion is that the car
buretor needs adjusting and, instead
of improving it, it is made worse.
Never touch the adjustments on a
carburetor until you are sure that
they require it.
Faulty ignition and leaky cylin-
ders are often mistaken for bad car
buretion. Before looking at the car
buretor it is only common sense to
make sure that the trouble is not
elsewhere: otherwise you may COM
plicate matters by throwing the car
buretor out of adjustment,
Breaker points out of adjustment
spark plugs short-circuited, porce-
lains cracked, loose connections,
grounds and even a retarded spark
may look like carburetor disease un-
til an investigation is made.
Likewise valves that need grinding
or cylinders that leak may also
throw suspicion on the carburetor.
A faulty mixture may be the re-
suit of many things besides improper
adjustment. and these must be eliml-
mated before the carburetor setting
is changed.
The Smoke Test.
A thin mixture may be caused by
air leaks in the manifold. cylinder
head gaskets, valve plugs or valve
guides. Any of these will produce
missing at low speed. A leak in any
part of the manifold may be deter
mined by noting whether smoke from
a cigar or cigarette will be sucked
in. other leaks may be located by
feeling or listening.
The mixture will be weak il the