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TROUBLE
PROBABLE
CAUSE
CORRECTION
c. Retard
breaker
or impulse
c. Points
may not be closing
due
coupling
not operating.
to
wrong
adjustment,
or may
Engine
may kick back
during
not be electrically
connected
in
cranking
due
to advance
the
circuit
due
to
a poor con-
timing
of ignition.
nection.
Inspect
points
to
see if
they
close.
Check
for proper
contact
at
the
terminals
of
magneto
and at
the
vibrator.
Check
wiring.
d. Vibrator-magneto
combination
d. Turn
engine
in proper
direction
not "functioning"
electrically.
of rotation
until retard
points
just
open on No. 1 cylinder
posi-
tion.
Remove
input connection
from
starter
to
prevent
engine
turning
and
while holding
No.
1
plug lead 5/16 inch from ground
energize
vibrator
by turning
switch
to
start.
Plug
lead
should
throw
a 5/16 inch spark.
If
spark
is weak or missing
try
new vibrator.
If
this
does not
correct
trouble
remove
magneto
and check
for improper
internal
timing
or improperly
meshed
distributor
gears.
e. Magneto
improperly
timed
e.
Check
magneto-to-engine
timing.
to
engine.
f. Advance
breaker
out of
f. Check
magneto
internal
timing.
adjustment
(internal
timing
off).
g. Retard
points
opening
too
g.
Check
timing
of retard
points
late or
impulse coupling
or
impulse
coupling.
timed
wrong.
2. Engine
Roughness.
a. Defective
spark plugs.
a.
Try new
spark
plugs,
b. Defective
spark
plug
leads.
b.
Check
plug leads
for continuity
and breakdown.
c. Defective
breaker
points.
c. Check
magneto
breaker
for
burning
or dirt.
(Main &
Retard)
SIMMONDS FUEL INJECTION
TROUBLE
PROBABLE
CAUSE
CORRECTION
1. Rough engine
operation,
a.
Clogged
nozzle(s)
or lines.
a. Remove
nozzles
and clean
in
cold cylinder
or
high
fuel
solvent.
Blow
compressed
air
pressure.
through the
nozzle
in direction
opposite
fuel flow
with
100 psi
air pressure.
b. Incorrect
fuel/air
mixture.
b. Make
sure
mixture
control
is
set
properly.
Check throttle
body and fuel
pump
assembly.
If
proper
adjustment
of mixture
control
does not give correct
fuel
flow remove
and replace
fuel pump and
throttle
body.
3-69
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Table of Contents
Troubleshooting
