Ford Manual
The spraying nozzle of the carburetor having a very small opening, a minute particle of grit or other
foreign matter will clog up the orifice, and result: motor will begin to misfire and slow down as soon as
it has attained any considerable speed. This is accounted for by the fact that at high speeds the increased
suction will draw the particles of dust, etc., into the nozzle. By opening the needle valve half a turn and
giving the throttle lever two or three quick pulls the dirt or sediment will often be drawn through, when
the needle may be turned back to its original place. If this does not accomplish the purpose, the
carburetor should be drained.
If Engine runs too fast or chokes with throttle retarded---what?
Answer No. 49
If the engine runs too fast with the throttle fully retarded unscrew the carburetor throttle lever adjusting
screw until the engine idles at suitable speed. If the motor chokes and stops when throttle is fully
retarded the adjusting screw should be screwed in until it strikes the boss, preventing the throttle from
closing too far.
What is the purpose of the Hot Air Pipe?
Answer No. 50
It takes the hot air from around the exhaust pipe and conducts it to the carburetor--- where the heat
facilitates the vaporizing of the gasoline.
What is the purpose of the Float?
Answer No. 51
It automatically controls the flow of the gasoline into the carburetor. If it floats too low, starting will be
difficult; if too high, the carburetor will flood and leak.
Should Priming Rod be used in starting when Motor is warm?
Answer No. 52
No. The carburetor does not ordinarily require priming when the motor is warm, and starting with the
rod pulled out is apt to "flood" the engine with an over-rich mixture of gas, which does not readily
explode. This naturally causes difficulty in starting. If you should accidentally flood the engine, turn the
carburetor adjusting needle down (to the right) until it seats; then turn the engine over a few times in
order to exhaust the rich gas. As soon as the motor starts, turn back the needle (to the left) and readjust
the carburetor.
The Ford Ignition System
What is the purpose of the Ignition System?
Answer No. 53
It furnishes the electric spark which explodes the charge in the combustion chamber, thus producing the
power which runs the engine. It is important that the charge be correctly ignited at the proper time, in
order to obtain satisfactory results in running the car. In the Ford car the ignition system is as simple as it
is possible to make it.
How does the Magneto generate current?
Answer No. 54
When the engine is running, the magnets attached to the fly wheel, pass the coil spools on the magneto
coil assembly creating an alternating low tension current in the magneto coil. This current is carried from
this magneto coil to the coil box through the magneto contact assembly and magneto wires.
Should the Coil Vibrator Adjustment be disturbed?
Answer No. 55
The present style of coil unit is properly adjusted when it leaves the factory and this adjustment should
not be disturbed unless to install new points. When adjustments are necessary they should, whenever
possible, be made by one of our service stations who have special equipment for testing and adjusting
units and will gladly furnish expert service.
How is a Weak Unit detected?
Answer No. 56
