Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1919-01-05
Is|nPl|F|ED.LEssONs IN
~ CARE OF AUTOMOBILE
Expert Gives Interesting Sugscs.
lions in Matter of Trouble
Hunting"
MUST BE DONE SYSTEMATICALLY
But One Way TO Locate Machines
sisaHments Quickly and Certainly.
Questions and Answers on Man,
Cur Drivers Problems.
Auto Lesson No. 1a1.


Auto Lesson No. I2I.
in the last few lessons. you wer,
II t2!u now any one Of the three Essen
4 tials' could cause engine trouble. Thi:
B Eiyes you a foundation for properl,
%iisplnE about the locating trouble.
Trouble locating is n series of elm
4 nations. the elimina tons being bascG
= on -rca soninE and testing.
Engine troubles might he clasecd a>
tot sfour kinds; namely. engine viii nos
start. engine stops while runnini;
smoothly; engine misses or it lacks
cause of the engine stopping
suppose the car has hecn running
suddenly stops. wha, wonid we do:
3NFirst OF all We would think OF the
three, essentials. namely. COMPRESSION
mixture and ignition. and then reason
5 az talk to ourselves somewhat as fol-
Can compression loss be IA" cause
dcrs will not lose their cornpro sson
suddenly and at the same time. So
compression is eliminated as n pussi-
Is mixture trouble the cause? Ii
eight Tds be Have VIC gas in the tank :
worknE @. k Np pS Wv Was thsre
popping in the carburctcr before tho
STOPPING of tho engine: II "ic"." then
NC can he reasonably sure that the
line TO the carburctcr. If NO" ;hcn
NC must look further.
Can ignition have failed: Yes Has
the car vibration Jared our switch
open" No. Is there any resson why
the hatterH should he discharEeG" No.
the cause tina, time? Why so-and-so.
IS that The cause OF the stopping now:
Let US EN, out and see. tFrom this
always knowing what is was that
caused the trouble. and The. remedy
therefor, as il il quite possible that
ths trouble may again develop
Having failed to locate the trouble
by re2sonns, VIA, IN
First run over the wiring quickly and
see that mono has come off or is short
circuted. examining carefully al places
where wires cross or rest against par. y
or the car. as the insulation may have
worn Oft at one OF these places.
49,. SYSTEM or IGNITION
- The examination failing 20 show the
preston being eliminated. We must
zee whether the ignition or mixture
has failed. Let us first check up the
plnnins. the current runs thr%,..i
wire from the distribute To the Sls"
plug and then gives spark 10y jump
grounded portion. 80 II We We're to
lake one Of the wires off the plug and
hold it about an eighth Of Az inch
from metal OF the engine, Ne will see
Il spark If the ignition is O. X. when
some one cranks the engine for us.
Thus the FIRST test 10 make is 10 take
!. enc OF the wires from Il plug. h"id IL
about an eighth OF an inch from tho
engine and get someone TO crank the
snEine. II We get spark, then VIC
know that the ignition Is o. Il and
that the trouble is due to the mix
ture. If We do not get y spark. We
know that the trouble is in the .gni-
!. mixture.
Suppose W" did re, a spark. w,
know now nov II tnn; mixture i me 70"
justment will not go wrong suddenly
sot we VIII not touch the adjustment
screws. Are We getting gasoline to the
primer and food the carhuretcr, II
II Will not food or takes Il long ime
20 do so, then We know that the trou-
BILE is in the feed as given in prcvi.
Is Gus lesson. IL IL does Hood. whui then.
{ It Is possible tina. the noat was stuck
and we. freed it, so let W test it by
seeing il the engine Will now run II
not; what then could be the Trouble?
I,ossib!y water has gotten into THE gas
fill 1t with a fresh supply OF wasolinc
md see II ii will then run. We may
even have I" I,our some :aw gasoline
into the cylinders through the com
preston cocks.
80 Sometimes. though rarely, Tho car
bureter will come loose from the man
irold. due 10 the bolts working back,
and thus allow extra air to get in,d
the mixture. in this way weakening /.
go AS to cause complete stopping OF
The engine. You vii! be able to fee!
the ioosenesS.
II the troUh!4 is due 10 the mixture
the above meih2G. is sure 10 locate it.
Let us assuncNthat Ne failed To &c;
ceed.
Where the engine suddenly stop. We
4 need not touch the spark plugs. as ali
four VIII not 80 tad suddenly Bv
The same reasoning we kno~ lint Tho
wires between the plugs and the dis
secondary lead. however. may be the
cause OF the trouble. and il 1t is il
Pro ply Is due 10 a short circuit .
ne wire from the coil 10 thr ground
snd thus complete an examination Of
'i oek s e, the Il. w%nlh ." MIL /"
unless broken is seldom the cauac ot
trouble icauton: SON" distributor
brushes a! d" NOT max" an actual con-
Having satisned ourselves that -h,.
seeondar% is o. X. ami an cram;nr-
J ai9n OK the wires q .he primary as
Gne TO q wirc being hr"ker inside il
insulation. or 10 q failure Of one OF
ms, UNITS nj ". mus, hsref%re, now
irnsc - would be well 10 carr. +; ,.onr
RIO ~, testing lamp AS shown in
I've n!u>tration This can also he.
At night.
SisTEM ATTIC TROIBI.E-IilN TI!it
is QUICK TEOl BLE:-FINDI:lI
~ The systematic trouh!e- hunter 10 tho
quick trouble-fndcr SO The next Thing
TO do !: to determine the order of the
enaits In the circuit. Let US assurn.
that we have e distributor system in
which the current goes from the ba,-
Try TO the switch: then tho coil. then
me interrupted aud back through The
& around to the battery W. would first
then test INC battery. by holding one
wire or our testing lamp TO the positive
poe OF the battery and the other 10
the NEGATIVE. IL the lamp lights N.
s52ttery is O h. II j, fails 10 light. The
.@oaitfry - INC 'r"uhl" As The con
I,ectlng links between the various co.'s
sfiay have become loosenra we yyiI'
3 nave TO try them. The next step rnuln
he 10 test each cell. rs one may bc bad
Should this be tho case. this cell ca =
skbe cut out and the remaining cells xiii
sfPropaDly give enough current TO re,
5pS bone. In the case of "A dischar~sd
storage battery. dry cells can be s1,I,.
sstituted for H. bat when this Is dor,
gathc generator mus; be disconnected
49,. The battery being .. L. Nc viii ,,rr