The Glasgow courier. [volume] (Glasgow, Mont.) 1913-current, 1915-11-19

10 the amount Of current consumed
for ignition constant or do different On.
nine speeds or different road condition.,
cause It to vary?
The consumption of current is pro
portiOnal to the motor speed. For in
stance. at 600 revolutions twice as
many sparks are required as at 800.
However, no more current is required
to produce a single spark at GOO or
5000 for that matter than is required
at 300.
My car gives mo a lot Of trouble
through o~verheating. am unable to
run over eight or ten miles before the
water boiIs in tho radiator. The tim.
ing is right, the fan works properly,
also the pump. There is no obstruc.
ton in water lines, and there seems
to be nothing wrong in the timing or
water circulation. Tho magnetic is
advanced as far as possible and I am
using a lean mixture. What 10 the
matter?
You have named practically all the
conditions that might cause overhead
ing, vet since the trouble Is still there
it would seem that the search has not
been thorough enough. Overheating
may be due to a defect in the cooling
system. rich mixture, retarded spark.
improper fabrication or incorrect valve
timing and possibly a slipping clutch
or excessive friction in the chassis.
Under the first head there are several
places where there might be difficulty.
First determine that the water Is cir
culating properly by emptying enough
water out of the system to uncover
the return connection to the top of the
radiator. Then with the motor run
ming note whether the water flows
freely. If it does not, fiji the radiator
full Of water and run the motor until
the water boils. Then feel the various
parts Of the cooling system, noting the
relative temperatures. For instance. If
there Is an obstruction in the return
water header. such as a piece of loose
rubber. the water on n side of the
obstruction will be hot and on the
other cool. Similarly. If the pump is
not operating. due to n broken vane or
a sheared pin that holds the vane to
the shaft, then the return header will
D6 very uOt. WulIc lhC W puIL VI
the radiator and the connection from
thence to the pump will be cool. II
the radiator is clogged up. the top
should be very hot and the bottom
cooler than usually. It mag be that
the fan belt is too loose.
Mil you please tell ma whether a
cylinder should leak compression past
the rings when stopped on dead cen
ter? If it should not leak, how do you
remedy this?
The rings should be tight enough so
that no appreciable loss Of pressure
will occur for. say. a minute. but 1t
cannot be expected that the pressure
will stay there indefinitely when the
) piston is stopped on dead center. From
the way your question is worded it
seems that you have turned the motor
over until one Of the pistons has
reached the end of the compression
: stroke and that you left it there for a
3 few moments ut least. If. however.
! we have misunderstood you and the
fact actually is that when you turn
: the motor Over slowly without stop
: ping the pressure decreases then you
: have a leak. 1t may not be the fault
s of the rings. however. but due to the
3 valves. If the trouble is due to leak
4 ing rings they must be replaced. and II
3 the pistons and cylinders are very
badly worn it may be necessary to bore
y out the cylinders and tit larger rings.
Before going to the trouble of tearing
= down the motor and examining thu
pistons and rings remove the exhaus
valve and note whether it is carbon
q tied or pitted. If so it must be ground
Also note whether there is any clear
g ance between the valve stem II tn
r. push rod. There should be sutticien
q space to insert a piece Of writing pa
8 per-, and If there is not b push ro'
8 must be adjusted by %loosening the loci
y nut. which is the lower one. and the
q turning the upper nut to the right. |
s. there is no clearance the valve will b
g held off it's sea and leakage will occur
IN If the exhaust valve is found to be il
- good condition examine the inlet valve
= How is a canvas strip used to pull
y car out Of the mud?
= The canvas strip is supplied wit
s cords at either end and is tied to
= stake ut the front and the rear tie
= around the tire. When the wheel start
& to slip it carries the canvas with il
E and the latter is wound upon the tirl
= the car coming forward at the sam
time.
would like to know what causes
= dull knock in my engine running sIowI
= when idle. With both throttIes "a