Willys Station Wagon - Page 24

Trouble Shooting
ENGINE WILL NOT RUN
Failure of your engine to operate is usually caused by lack of
fuel at carburetor or insufficient or no spark at spark plugs.
First check to be sure that there is ample fuel in the tank. If
there is sufficient fuel, remove the fuel tube from the car-
buretor and operate the starting motor
noting whether or not fuel flows from the
tube. If fuel does flow from the tube you
have proven that the fuel system is satis-
factory and the trouble is probably in the
electrical system. Failure of the fuel to
flow indicates that there is an obstruction
ïn the fuel system or that the fuel pump
is not operating. In this case remove the
fuel pump sediment chamber cover by re-
moving the attaching screw at the top
center (bottom center on six cylinder en-
engines) of the pump. Remove the filter-
ing screen mounted in the chamber and
check it. If it is obstructed you have
probably located the trouble or if it is
clean the pump is probably at fault.
Note, however that in freezing weather
there is always the possibility that water
has accumulated in the fuel line and
frozen to obstruct fluel flow.
It is well to have available the necessary information to enable you to make the usual
checks to locate trouble which might occur when professional assistance is unavailable.
Should the fuel flow be found satisfactory check the ignition
system. The quickest check is to turn on the ignition switch
and remove one spark plug cable from a plug. Hold the cable
terminal about 3” from a clean unpainted part of the engine
and operate the starting motor. If the ignition system is satis-
factory a fat, blue spark will jump from
the terminal to the engine. No spark or a
weak white spark indicates trouble.
Trouble in the ignition system can usually
be traced to dirt and moisture on the ig-
nition system units, to a loose or dirty
electrical connection or to a fault in the
coil or distributor.
The units of the ignition system should be
kept clean, for dirt accumulations absorbs
moisture which is apt to conduct part of
the electric current to the grounded side of
the electrical system and cause trouble.
If these parts are damp and dirty, wipe
the spark plug ignition wires, distributor and coil dry and
clean. If itis known that engine stoppage is due to moisture and
a carbon tetrachloride type fire extinguisher is available, spray
these units thoroughly with'the extinguisher liquid. This
liquid evaporates rapidly and as it evaporates will dry the
units to enable you to start the engine.