Evening capital. [volume] (Annapolis, Md.) 1922-1981, 1923-01-08
OILINC CAUSE OF
MANY AUTO ILLS
Average Owner Prone to Seek
Other Sources of Evils Due
to fabrication.
PUMPING" AND ITS EFFECTS
Kind. Quantity and Ring-Fitting Are
Sensitive Points That Must BE
Given the Utmost considera-
tion by Owner.

No car owner Of the present day
needs 10 Sc told how important inbri-
cation in al its many aspects Is III
contributing to the life and efficiency
OF the motor car. However, there are
certain forms OF fabrication failure
that the owner often does not realize
as existing. lie does not attribute TO
them the troubles which they have
really caused
For instance. it is very common
characteristic of automobile engines
IL develop tendency to allow The
fabrication oil 10 leak past the piston
rings into the combustion chamber,
where it scots the plugs, induces the
smoking of an aggravated character
ard forms extremely heavy carbon
deposits. Frequently car owners com
plain of The carbonizing tendency OF
their engines without realizing APP
parently that the trouble is due 10
Improper fabrication or TO minor
trouble in the engine.
coil Pumping" Evil.
The common name for this leakage
Of oil is "oil pumping" and its fruits
are Il carbonized motor, or sooty, oily
plugs. which induce ignition trouble
i'm more or less aggravated form.
Large sums were spent In changing
spark plugs. putting in new piston
rings and even replacing the pistonss
to cure a chronic case OF oil pumping.
| and all 10 no use. for the simple rea-
son that one had neglected some lit
tie seemingly minor detail that was
| tie key TO tie whole situation.
The fabrication OF the engine cylin-
der involves a good many problems
and some cooperation on the psrt
Of tie user If they are to be satis-
factorlly solved. The ideal condition
Of course. is TO have just enough OIL
supplied to keep the cylinders prop
erly fabricated, but not so much thai
II will work past the rings into the
| combustion chamber. In practice this
/ IDEAL is difficult 70 achieve and ~
1 practically every engine there Is q
certain amount OF leakage. In Taos'
cases this is kept low enough to keog
carbon and other troubles from TIA
acute stage.
Every car manufacturer recsfrn
! mends a certain grade of oil To hs
used In his engine and his advsc
should be rigidly adhered to by thf
car owner. IN case there is any qu :
ton In the matter the advice OF th'
service station should he asked. Gh'
commonly recommended lubricant i
medium body oil, but this is no.
universal. so, The car owner should
make absolutely sire Of his GROUND
In. this yitally important matter.
Ring Fitting Exaeting Matter.
Fitting piston rings means more
than merely placing the rings in theii
| grooves. The rings must fit tia
grooves SO that there is perhaps 90
of an inch up and down clearance. %
Just enough 10 prevent leakage, an'
still not cause the ring to stick. Tn
rings should be Tapped in size ant
ring fittings should be done by ex
perienced hands.
There has been tendency in re
cent years when engine lubricatn,
troubles occur TO fit some special typ
Of piston ring and believe that set
ties the matter. Many Of the sDecia
rings have re4,l yalue hut they ms
nc acenratelysiitted. just the same q
~. ordinary laeonally-split ring.
In some eases II is possible to cur
chronic case of oil pumping by drill
inc the skirt of the piston Will
1-16-inch holes, spaced M equal dis
tances under the lowest groove. This
with perhaps the addition of ii scrape
ring in the skirt. will often wori
wonders.
Finally. a scored cylinder will IN
duce oil pumping since the trenche
I'm the cylinder wall allow the oil Z
escape past the rings. In this cas-
the cylinder will have to be operated