TROUBLE
SHOOTING
CONDITION
A.
Hard Starting or Loss of Power
B. Overheating
C. Backfiring
D. Occasional
"
Skip
"
at High Speed
E
.
Operating Erratically
F. Engine
Will
Not Idle
POSSIBLE CAUSE
1. Faulty Ignition.
a.
Loose or grounded high tension
or
breaker
point leads.
b. Improper breaker point gap and timing.
c. Defective breaker points.
d. Faulty spark plug or improper gap.
e. Faulty condenser or coil.
2.
Faulty Fuel System.
a.
Gasoline not getting to carburetor.
1. Dirt or gum in fuel line.
2.
Fuel pump faulty.
b.
Dirt
in
carburetor.
c. Carburetor improper1
y
adjusted.
1. Insufficient available cool air.
2.
Dirty air intake screen, shroud or cooling fins.
3.
Improper fuel.
4.
Fuel mixture too lean.
5.
Improper ignition timing.
6.
Engine overloaded.
7.
Tight tappet clearance.
1
.
Fuel mixture too lean.
2.
Improper timing.
3.
Valve
"
sticking
"
.
1. Spark plug gap too wide.
2.
lmproper carburetor setting or lack of fuel.
3.
Wrong type spark plug. Use recommended spark plug.
4.
Improper timing.
1. Clogged fuel line.
2.
Water in fuel.
3.
Faulty choke control
.
4.
Improper fuel mixture.
5.
Loose ignition connections.
6.
Air leaks in manifold or carburetor connections.
7.
Vent in gas cap plugged.
8.
Fuel pump faulty.
1. Improper carburetor idling adjustment.
2.
Carburetor clogged.
3.
Spark plug gap set too close.
4.
Leaking carburetor or manifold gaskets.