Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1919-07-20
SjMPL|F|ED LESSONS IN
CARE OF AUTOMOBILES
Loss OF Power and Valve Grinding
Discussed by Engineering En-
rCyt Gus rilich.
Machine Owners Arc Told How Their
Car Ills May BE Cured by Nc
chanical Physician Who Knows
,jjsNiotor Anatomy.

The writer has received grea, MANY
requests OF late for valve grinding in
Regarding 10" loss Of power. so. While n..o
quite recent article dealt with the
latter. a review Of il will be given here
OF the three acknowledgements
sion. mixture and iEni,lon-which mus,
5 pe perfect IN orhSr to have The engine
sion and mixture. are Responsible for
me power OF the engine. If the com
there will also he little power
cause of pGwST w is n"t %nS b Inc
means loss OF mileage per gallon OF
gasoline. and. Therefore. loss OF money.
ltwiii more than pay, 10 SPEND little
money. or, Time and labor. in order
to keep the engine as powerful as
should Rcndiust Cnrbmrctor.
If the loss OF power is due to the
mixture, then in four out OF I'VE cases
the remedy is "a rcadjust the car
m Suret9r; nro toT The mneNrerienred il
car to the service station Of the maker
Of either the Gar, or carhuretor. and
AS there are so many makes of car
ouretorS on the market. and as each
m Gs.sf,e has Two I've, or more models. no
Justment can be- given. For those who
wish to adjust their own carburetor
given:
r.i Never attempt to adjust a carhu-
&EsFfa No Works N"S and 3Se
Eeze sSn ar postal s9a 20 hs al
s shasf s NIL mrinS YOU an instruction
each part. and pointers on how TO tell
when the mixture is too rich or too
Lean. and how TO make the necessary
biF TO nsjsst ana i sarbu5sssr, having a
the ignition and compression is -. *
that TIA: there is no leakage of extra air,
buretor or the manifold and cylinders
After warming M the engine. the
low-speed adjustment; screw, slowly
turned ono notch at time. so as TO
make the mixture weaker. until the
engine stops. OF there is a popping in
eided slowing down Of the engine
Then the screw is turned TO make the
Fnao1T1, rirnff until The engine runs
One to three notchcs should he enough
In the latter case.
Once tho low, speed is adjusted it
high speed adjustment. To make this
sd1,usimeni the spark is advanced
and Immediately closed again IF there
IS no popping in the carburctor the
high speed adjusting screw is turned
oAS h'hth ~ Nts'HtT. ana tne thrOtt lie
again opened, and adjustment again
turned down one notch. AS soon as
there is popping. the high speed
mixture is made richer ono notch or
until the popping stops and the engine
acceieratcs quickly. or. as the saving
u.s., has good getaway
mixture troubles are not always due
TO the adjustment The gasoline may
iced 100 slowly. perhaps because Of
an obstruction in the feed pine or
noat valve. or to ihe level OF the haso-
line in the noat chamber being too
high or too low. because OF a fault in
the noat It's mechanism or valve
Loss OF power is more often due TO
loss OF compression than to anythin .
else. and loss of compression is mostly
Que to leaning valves. though there
may also be leakage AT. or through
the spark plugs. a the valve caps al
the compression cocks, or past the
piston rings.
Pouring oil around tho base OF the
spark plug. the compression cocks or
the valve caps. Will show il there is
leakage past them: as. IL there is the
OIL Will form IN bubbles when the en-
CINE IS running. SCrcw!ne tighter win
often stop this leakage. though some
tlneS in the cas-" of spark plugS and
valve caps. j; Will be necessary 10 re-
new the saskets under them :, coat
ing OF paste made o. Eraph!te and
shellac. on the threads of the valve
tight.
If the leakage is past the piston
rings. little can be done outside OF