The Richmond palladium and sun-telegram. [volume] (Richmond, Ind.) 1907-1939, 1919-11-29

CON- resston Is eliminated as posi-
BILE cause.
Is mixture trouble the cause? 1t
might be. Have we gas in the tank?
Yes. Is the gasoline feed system
working o. K.7 Apparently. Was
there popping in the carbureter be-
fore the stopping OF the engine? II
Eyes" then we can be reasonably sure
that the trouble is due to the feed of
the gasoline to the carbureter. If
mo-" then we must look further.
Can ignition have failed? Yes. Has
the car VIBRATION Jared our switch
| open? No. Is there any reason why
the battery should be discharged? No.
Did the car stop suddenly before as
| it has just done? Yes. What was the
that the cause of the stopping now?
/ Let us get out and see. If after an
investigation, we fail to find the trou-
! BILE to have been the same as the last
time, then we will have to begin to
! look for the cause by examination and
! test. (From this paragraph you can
see the wisdom OF always knowing
! what 1t was that caused the trouble,
and the remedy therefor, as it is quite
possible that the trouble may again
Develop
Having failed to locate the t. ,uble
,by reasoning, what shall we do next?
First run over the wiring quickly and
see that none has come off or is short
circuited, examining carefully all
places where wires cross or rest
against parts Of the car, as the insula-
ton may have worn off at one Of these
places.
The examination failing to show the
I hi IL
preston being eliminated, we must
ture has failed. Let US first check up
is running. the current runs through
the wire from the distributor to the
spark plug by jumping across the gap
of the plug to the grounded portion,
so if we were to take one of the wires
of the plug and hold it about an
eighth of an inch from the metal of
the engine, we will see a spark if the
ignition is o. X. when some one
cranks the engine for us. Thus the
first test to make is to take one of
the wires from a plug, hold it about
an eighth of an inch from the engine
and get some one to crank the engine,
If we get spark then we know that
the ignition is o. X. and that the
trouble is due to the mixture. If we
do not get a spark, we know that
the trouble is in the ignition system
} and can forget about the mixture.
Suppose we did get spark. We
know now that mixture is the trouble.
} Is 1t the adjustment? No. The adj
justment will not go wrong suddenly.
, so we will not touch the adjustment
screws. Are we getting gasoline to
the carburetor? Let us hold down the
primer and flood the carburetor. If it
will not flood or takes a long time to
, do so, then we know that the trouble
is in the feed as given in previous
lesson. If it does flood, what then?
1t is possible that the float was stuck
and we freed it, SO let us test it by
seeing if the engine will now run. II
not; what then could be the trouble?
Possibly water has got into the gaso
: line, so let us drain the carburetol
and fill it with fresh supply of gas
!. oline and see if it will then run. We
may even have to pour some raw gas
!. oline into the cylinders through the
compression cocks.
Sometimes, though rarely, the car
!. buretor will come loose from the man
fold due to the bolts working bask
) and thus allow extra air to get into
, the mixture, in this way weakening il
so as to cause a complete stopping Of
! the engine. You will be able to fee
. this looseness.
II the trouble is due to the mixture
the above method is sure to locate it
: Let us assume that we have failed tc
: get a spark and see how we must
proceed.
Where the engine suddenly stops
, we need not touch the spark plugs, as
all four will not 60 bad suddenly
BY the same reasoning we know thai
the wires between the plugs and the
distributor cannot be at fault. The
main secondary lead, however may
be the cause Of the trouble, and if il
| is, it probably is due to a short cir
cult. After tracing this lead we mus
trace the wire from the coil to thu
ground, and this complete an exam
ination of the secondary. It would b,
as well to look at the distributor, al
so, but this, unless broken, Is seldom
the cause Of trouble. (Some distribu
tor brushes do not make actual con
tact with the segments.)
Having satisfied ourselves that tn
secondary is o. X. and an examina
ton Of the wires of the primary dis