Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1919-12-07
.sIMPL|F|ED LESSONS IN
CARE OF AUTOMOBILE.
Compression. Mixture and Ignition
Discussed Ivy Engineer
ep.,s
tf, GucrrliCh.
THREE ESSENTIALS DEsCIIBED
Questions From Large Number OF
Gar Owners Answered in Language
2 Readily Understood by the Lay
t., man by Machine Expert.
Lesson No. I.

s Lesson No. I.
the rarse nd nss .gnjisn T eT0im6
mus. be perfect in order 10 have the
enginc run perfectly the first two
-comprcSSiou and mixture are respon-
stblc for the power OF the engine. II
the compression is weak, the power
mot right, there VIII also bc little
power
As loss of power is not only tho
cause Of annoyance when driving. but
means loss OF mileage per gallon OF
gasoline, and. therefore. los. OF money.
IT VIII more than pay 10 spend a little
sinoneN. or time and labor. in order TO
EkSSr the engine as powerful as pos
Sibie.
i the loss Of power is duo to the
the remedy is Ia rcadjuSt the carbu-
rector For the inexperienced it would
probably he best to drive the car to
either the car or carhurctor. and have
I adjusted there.
As there are so many makes OF car
euretors on he market, ana as each
maker has two or more models, no de-
JAILED instruction IN carburctor ad-
Juslmcnt can lie given. For those who
cali drivers should know how to DO it's
the following advice and method is
Never attempt 10 adjust a carburctor
unless the eng me has been thoroughly
how i; works ana the reason for and
purpose of every screw. y postal to
the carburctcr maker VIII bring YOU
an instruction sheet showing the
operation OF the carhurctor. and an
explanation Of each part. and pointers
ON how 10 tell when the mixture is too
rch or too lean. aud how 10 make
,hs necessary correction.
70 adjust a carhuretor having a
ISh speed anu low adjustrnc the
first tlling To do is 10 be sure that
the ignition ana COMPRESSION are o. X.
either between the manifold and car
uurtt"r or the manifold ana cylinders.
, rn,n w W" fh!,, UP me cnsnc, the
speed adjustment screw, slowly turned
1Mme notch at q ,imc. 81. as to make
stops, or there is a popping i'm tic
caronretor. or there is very decided
stiowins down of the engine. Then
turo richer, until the engine runs
smoothly and has spoeded UP a little.
hne TO three notChcS should he enough
adjust by Advancing SrnrI>.
once the low speed is adjusted, it is
rot touched when making tho high
Justmen,, the spark is advanced and
me throttle opened fairly quickly and
immediately closed again If there is
n" POPPING in the carburctor The high
spced adjusting screw is turned one
.n n9,n TO wSak Tn, and The throttle
soon as there is Il popping the hirb
speed mixture is made richc G ono "
The engine accclcratcs quickly. or as
INC SAYING is has good getaway"
Nturc lTonhI"s are not always due
20 the adjustment The gasoline may
feed too slowly, perhaps because OF
an obstruction in the feed pipe, or boat
in the float chamber being too high or
too low. because OF fault in the hoat
its mechanism or valve.
Loss OF power is more often due 10
1855 OF compression than TO anything
else, and loss Of compression is mostly
due 10 leaking valves though there
may also be leakage at or through the
spark plugs, at the valve caps. al the
compression cocks, or past the piston
rings.
How to Show Leakage.
Pouring oil around the base of the
SPARK plugs, the compression cocks or
the valve caps Will show if there is
nii ;;s; past them; as. if there is. the
CINE is running. Screwing tighter will
often stop this leakage. though some
, Inc, IN the case of spark plugs and
graphite grease Will help much in maxi
ing them uGht.
IL the leakage is past the piston
taking the engine down and correct :
ing the fault found when the piston
curing = Ilile Kerosene into the cylin-
der and letting it stand overnight
VIII often help and sometimes entirely
The valves are most often the cause
OF loss OF compression. They need To
be GROUND Y abou: every 1000 to $40
valves are as follows: 7-''''' ''''
Get set OF new valve cap sayicts.
some yalye-s TiIg compound ana
waive spring litter. something like the
one shown in the illustration
Remove the valve caps and valve
Spine covers. Scrape the carbon OH
me top OF valve and see !f il IL
numbered II not. number the valves
WIN center punch. Next Slide tI,n
valve spring TOOL under inc voi"o
spring cup and raise tho spring Tho
valve Will probably lift with Tho
spring. If not, lift 1t with a sc-nw-
driver, and then inscr, n wire ma.
nc valve head, as shown in the illus
ration. Then press down the waive
remove me KEY and let down tho
Old / Tres Made New