TROUBLESHOOTING
Complete these tasks
to
obtain fast, accurate test
results when troubleshooting the capacitor dis-
charge ignition system.
• Visual Inspection - Check wiring for broken,
pinched, or
loose leads. Connectors must
be
securely fastened
and
free from moisture or
water
accumulation.
• Test Equipment Condition - Make sure
testers are
in
working order. Many hours can be
wasted
by
replacing working components need-
lessly.
• Follow Procedure - Troubleshooting can seem
difficult
if
you
vary your technique for each prob-
lem
. Many times items
in
the system are over-
looked because
you
"thought" you tested them.
By
following
the
same procedure each time
you
troubleshoot,
all
items
in
the ignition system will
be tested.
• Test the Complete System - There may
be
occasions when more than one component
is
defective. If this condition
is
undetected,
repeated ignition system
failure may occur, or
damage
to
replacement parts could result.
Test
everything.
Flywheel Indexing
This test
is
used to identify erratic ignition opera-
tion.
Internal power pack problems could cause a
pack
to
fire erratically or continuously.
To
trouble-
shoot this Situation, determine if each cylinder
is
firing at the correct time
and
no
more than once
per
revolution.
Disconnect the spark plug leads and remove both
spark
plugs.
Place
the eraser
end
of a pencil
in
the number 1
spark
plug hole. Slowly turn the flywheel
by
hand,
clockwise, until the greatest length of the pencil
is
IGNITION
TROUBLESHOOTING
outside the spark plug hole. This indicates the
number 1 piston
is
near top dead center.
TYPICAL
1. Pencil
27360
Make a reference mark
on
the flywheel rim, 5
directly across from the timing pointer or starter
pivot screw. Label this mark number 1.
TYPICAL
45102
1. Mark
2. Timing pointer
Repeat procedure for number 2 cylinder. Label
this mark number
2.
Install the spark plugs
and
spark plug leads. Start
the engine
in
a test tank
and
run
the engine at the
RPM
where the problem exists.
Carefully hook
an
induction timing light
to
each
cylinder, alternately. The timing light should indi-
cate that
cylinder's number
only,
and
the number
should only appear near the timing pointer or
starter pivot screw.
If
another cylinder's number appears, or the cor-
rect number appears more than once per
revolu-
tion, check ignition coil primary lead routing or
replace power pack.
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119 E
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